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191 Cards in this Set

  • Front
  • Back

What is the superior boundary of the axilla for dissection?

Axillary vein
What is the posterior boundary of the axilla for dissection?
Long thoracic nerve
What is the lateral boundary of the axilla for dissection?
Latissimus dorsi muscle
What is the medial boundary of the axilla for dissection?
Lateral to, deep to, or medial to pectoral minor muscle, depending on level of nodes taken
What four nerves must the surgeon be aware of during an axillary dissection?
1. Long thoracic nerve2. Thoracodorsal nerve3. Medial pectoral nerve4. Lateral pectoral nerve
What is the location and innervation to of the long thoracic nerve?
- Courses along lateral chest wall in midaxillary line on serratus anterior muscle- Innervates serratus anterior muscle
What is the location and innervation to of the thoracodorsal nerve?
- Courses lateral to long thoracic nerve on latissimus dorsi muscle- Innervates latissimus dorsi muscle
What is the location and innervation to of the medial pectoral nerve?
- Runs lateral to or through the pectoral minor muscle, actually lateral to the lateral pectoral nerve- Innervates the pectoral minor and pectoral major muscles
What is the location and innervation to of the lateral pectoral nerve?
- Runs medial to the medial pectoral nerve (names describe orientation from brachial plexus!)- Innervates the pectoral major
If the medial pectoral nerve is lateral to the lateral pectoral nerve why are they named as such?
Names describe the orientation in the brachial plexus
What is nerve 1?


 

What is nerve 1?


Thoracodorsal nerve (1)

Thoracodorsal nerve (1)

What is nerve 2?


 

What is nerve 2?


Long thoracic nerve (2)


 

Long thoracic nerve (2)


What is nerve 3?


 

What is nerve 3?


Medial pectoral nerve (3)


 

Medial pectoral nerve (3)


What is nerve 4?


 

What is nerve 4?


Lateral pectoral nerve (4)


 

Lateral pectoral nerve (4)


What is structure 5?


 

What is structure 5?


Axillary vein (5)


 

Axillary vein (5)


What is the name of the deformity if you cut the long thoracic nerve (2)?

What is the name of the deformity if you cut the long thoracic nerve (2)?

"Winged scapula"

What is the name of the cutaneous nerve that crosses the axilla in a transverse fashion? (Many surgeons try to preserve this nerve)
Intercostobroachial nerve
What is the name of the large vein that marks the upper limit of the axilla?
Axillary vein
What is the lymphatic drainage of the breast?
- Lateral: axillary lymph nodes- Medial: parasternal nodes that run with internal mammary artery
What are the levels of axillary lymph nodes?
- Level 1 (low): lateral to pectoral minor


- Level 2 (middle): deep to pectoral minor


- Level 3 (high): medial to pectoral minor


 

- Level 1 (low): lateral to pectoral minor


- Level 2 (middle): deep to pectoral minor


- Level 3 (high): medial to pectoral minor


Where are "level I" lymph nodes?
"Low": lateral to pectoral minor


 

"Low": lateral to pectoral minor


Where are "level II" lymph nodes?
"Middle": deep to pectoral minor


 

"Middle": deep to pectoral minor


Where are "level III" lymph nodes?
"High": medial to pectoral minor


 

"High": medial to pectoral minor


What does the levels of axillary lymph node involvement tell you?
The higher level of involvement has a worse prognosis, but the level of involvement is less important than the number of positive nodes
What are Rotter's nodes?
Nodes between the pectoralis major and minor muscles; not usually removed unless they are enlarged or feel suspicious intraoperatively
What are the suspensory breast ligaments called?
Cooper's ligaments
What is the mammary "milk line"?
Embryological line from shoulder to thigh where "supernumerary" breast areolar and/or nipples may be found
What is the "tail of Spence"?
"Tail" of breast tissue that tapers into the axilla
Which hormone is mainly responsible for breast milk production?
Prolactin
What is the incidence of breast cancer?
12% lifetime risk
What percentage of women with breast cancer have no known risk factor?
75%
What percentage of all breast cancers occur in women younger than 30 years?
~2%
What percentage of all breast cancers occur in women older than 70 yeras?
33%
What are the major cancer susceptibility genes?
BRCA1 and BRCA2 (BReast CAncer)
What option exists to decrease the risk of breast cancer in women with BRCA?
Prophylactic bilateral mastectomy
What is the most common motivation for medicolegal cases involving the breast?
Failure to diagnose a breast carcinoma
What is the "Triad of Error" for misdiagnosed breast cancer?
1. Age <45 years2. Self-diagnosed mass3. Negative mammogram Note: 75% of cases of misdiagnosed breast cancer have these three characteristics
What are the history risk factors for breast cancer?
NAACP:- Nulliparity- Age at menarche (<13 years)- Age at menopause (>55 years)- Cancer of the breast (in self or family)- Pregnancy with first child (>30 years)
What are physical / anatomic risk factors for breast cancer?
CHAFED LIPS:- Cancer in the breast (3% synchronous contralateral cancer)- Hyperplasia (moderate/florid) (2x risk)- Atypical hyperplasia (4x)- Female (100x male risk)- Elderly- DCIS - LCIS- Inherited genes (BRCA I and II)- Papilloma (1.5x)- Sclerosing adenosis (1.5x)
What is the relative risk of hormone replacement therapy for getting breast cancer?
1-1.5
Is "run of the mill" fibrocystic disease a risk factor for breast cancer?
No
What are the possible symptoms of breast cancer?
- No symptoms- Mass in breast- Pain (most are painless)- Nipple discharge- Local edema- Nipple retraction- Dimple- Nipple rash
Why does skin retraction occur with breast cancer?
Tumor involvement of Cooper's ligaments and subsequent traction on ligaments pull skin inward
What are the signs of breast cancer?
- Mass (1 cm is usually the smallest lesion that can be palpated on exam)- Dimple- Nipple rash- Edema- Axillary / supraclavicular nodes
What is the most common site of breast cancer?
Approximately 1/2 of cancers develop in the upper outer quadrants
What are the different types of invasive breast cancer? How common is each?
- Infiltrating Ductal Carcinoma (~75%)- Medullary Carcinoma (~15%)- Infiltrating Lobular Carcinoma (~5%)- Tubular Carcinoma (~2%)- Mucinous Carcinoma (colloid) (~1%)- Inflammatory Breast Cancer (~1%)
What is the most common type of breast cancer?
Infiltrating Ductal Carcinoma
What is the differential diagnosis for breast cancer?
- Fibrocystic disease of the breast- Fibroadenoma- Intraductal papilloma- Duct ectasia- Fat necrosis- Abscess- Radial scar- Simple cyst
Describe the appearance of the edema of the dermis in inflammatory carcinoma of the breast?
Peau d'orange (orange peel)
What are the screening breast exam recommendations?
- Self-exam of breasts monthly- Ages 20-40 years: breast exam every 2-3 years by a physician- >40 years: annual breast exam by physician
What are the screening mammogram recommendations?
Recommendations are controversial, but most experts say:- Baseline mammogram between 35-40 years- Mammogram every year or every other year between 40-50 years- Mammogram yearly after age 50
What is the best time for breast self-exams?
1 week after menstrual period
Why is mammography a more useful diagnostic tool in older women than younger?
Breast tissue undergoes fatty replacement with age, making masses more visible; younger women have more fibrous tissue, which makes mammograms harder to interpret
What are the radiographic tests for breast cancer?

- Mammography


- Breast ultrasound


- MRI

What is the classic picture of breast cancer on mammogram?
Spiculated mass


 

Spiculated mass


What option is best to evaluate a breast mass in a woman younger than 30 years?
Breast ultrasound
What are the methods for obtaining breast tissue for pathologic examination?
- Fine needle aspiration (FNA)- Core biopsy (larger needle core sample)- Mammotome stereotactic biopsy- Open biopsy - incisional (cutting a piece of mass) or excisional (cutting out entire mass)
What are the indications for biopsy of breast tissue?
- Persistent mass after aspiration- Solid mass- Blood in cyst aspirate- Suspicious lesion by mammography / US / MRI- Bloody nipple discharge- Ulcer or dermatitis of nipple- Patient's concern of persistent breast abnormality
What is the process for performing a biopsy when a non-palpable mass is seen on mammogram?
Stereotactic (mammotome) biopsy or needle localization biopsy
What is a needle loc biopsy (NLB)?
Needle localization by radiologist, followed by biopsy; removed breast tissue must be checked by mammogram to ensure all suspicious lesion has been excised
What is a mammotome biopsy?
Mammogram-guided computerized sterotactic core biopsies
What is obtained first, the mammogram or the biopsy?
Mammogram is obtained first; otherwise, tissue extraction (core or open) may alter the mammographic findings (FNA may be done prior to mammogram because fine needle usually will not affect the findings)
What would be suspicious mammographic findings?
Mass, microcalcifications, stellate / spiculated mass
What is a "radial scar" seen on mammogram?
Spiculated mass with central lucency, +/- microcalcifications
What tumor is associated with a radial scar?
Tubular carcinoma; thus biopsy is indicated
What is the workup for a breast mass?
1. Clinical breast exam2. Mammogram or breast ultrasound3. Fine needle aspiration, core biopsy, or open biopsy
How do you proceed if the mass appears to be a cyst?
Aspirate it with a needle
Is the fluid from a breast cyst sent for cytology?
Not routinely; bloody fluid should be sent though
When do you proceed to open biopsy for a breast cyst?
1. In the case of a second cyst recurrence2. Bloody fluid in the cyst3. Palpable mass after aspiration
What is the pre-op staging workup in a patient with breast cancer?

- B/l mammogram (cancer in one breast is a risk factor for cancer in contralateral breast


- CXR (to check for lung metastasis)


- LFTs (to check for liver metastasis)


- Serum calcium level, alkaline phosphatase (if these tests indicate bone metastasis / "bone pain", proceed to bone scan)


- Other tests depending on signs/symptoms (eg, head CT if pt has focal neuro deficit, to look for brain metastasis)

What hormone receptors must be checked for in biopsy specimen?
Estrogen and progesterone receptors - this is key for determining adjuvant treatment; must be obtained on all specimens (including fine needle aspirates)

What staging system is used for breast cancer?

TMN: Tumor / Metastases / Nodes (AJCC)

What is "stage I" breast cancer?

Tumor ≤ 2 cm in diameter without metastases, no nodes

What is "stage IIA" breast cancer?

- Tumor ≤ 2 cm in diameter with mobile axillary nodes OR


- Tumor 2-5 cm in diameter with no nodes

What is "stage IIB" breast cancer?

- Tumor 2-5 cm in diameter with mobile axillary nodes OR


- Tumor >5 cm with no nodes

What is "stage IIIA" breast cancer?

- Tumor >5 cm with mobile axillary nodes OR


- Any size tumor with fixed axillary nodes, no metastases

What is "stage IIIB" breast cancer?

- Peau d'orange (skin edema) OR


- Chest wall invasion / fixation OR


- Inflammatory cancer OR


- Breast skin ulceration OR


- Breast skin satellite metastases OR


- Any tumor and + ipsilateral internal mammary lymph nodes

What is "stage IIIC" breast cancer?

- Any size tumor, no distant mets


- Positive: supraclavicular, infraclavicular, or internal mammary lymph nodes

What is "stage IV" breast cancer?

Distant metastases (including ipsilateral supraclavicular nodes)

What are the sites of metastases of breast cancer?

- Lymph nodes (most common)


- Lung / pleura


- Liver


- Bones


- Brain

What are the major treatments of breast cancer?

- Modified radical mastectomy


- Lumpectomy and radiation + sentinel lymph node dissection


- Both treatments either +/- postop chemotherapy / tamoxifen

What are the indications for radiation therapy after a modified radical mastectomy?

- Stage IIIA


- Stage IIIB


- Pectoral muscle / fascia invasion


- Positive internal mammary LN


- Positive surgical margins


- ≥ 4 positive axillary LNs post-menopausal

What breast carcinomas are candidates for lumpectomy and radiation (breast-conserving therapy)?

Stage I and II (tumors <5 cm)

What approach may allow a patient with stage IIIA cancer to have breast conserving surgery?

NEOadjuvant chemotherapy - if the pre-op chemo shrinks the tumor

What is the treatment of inflammatory carcinoma of the breast?

Chemotherapy first! Then often followed by radiation, mastectomy, or both

What is a "lumpectomy and radiation"?

- Lumpectomy (segmental mastectomy: removal of a part of the breast)


- Axillary node dissection


- Course of radiation therapy after operation, over a period of several weeks

What is the major absolute contraindication to lumpectomy and radiation?

Pregnancy

What are other contraindications to lumpectomy and radiation?

- Previous radiation to the chest


- Positive margins


- Collagen vascular disease (eg, scleroderma)


- Extensive DCIS (often seen as diffuse microcalcification)



Relative contraindications:


- Lesion that cannot be seen on the mammograms (ie, early recurrence will be missed on follow-up mammograms)


- Very small breast (no cosmetic advantage)

What is a modified radical mastectomy?

- Breast, axillary nodes (level II, I), and nipple-areolar complex are removed


- Pectoralis major and minor muscles are not removed (Auchincloss modification)


- Drains are placed to drain lymph fluid

Where are the drains placed with a modified radical mastectomy (MRM)?

1. Axilla


2. Chest wall (breast bed)

When should the drains be removed?

<30 cc / day drainage

What are the potential complications after a modified radical mastectomy?

Ipsilateral arm lymphedema, infection, injury to nerves, skin flap necrosis hematoma / seroma, phantom breast syndrome

During an axillary dissection, should the patient be paralyzed?

No, because the nerves (long thoracic / thoracodorsal) are stimulated with resultant muscle contraction to help identify them

How can the long thoracic and thoracodorsal nerves be identified during an axillary dissection?

Nerves can be stimulated with a forceps, which results in contraction of the latissimus dorsi (thoracodorsal nerve) or anterior serratus (long thoracic nerve)

When do you remove the drains after an axillary dissection?

When there is <30 cc of drainage per day, or on POD #14 (whichever comes first)

What is a sentinel node biopsy?

Instead of removing all the axillary lymph nodes, the primary draining or "sentinel" lymph node is removed

How is the sentinel lymph node found?

Inject blue dye and/or technetium-labeled sulfur colloid (best results with both)

What follows a positive sentinel node biopsy?

Removal of the rest of the axillary lymph nodes

What is now considered the standard of care for lymph node evaluation in women with T1 or T2 tumors (stages I and IIA) and clinically negative axillary lymph nodes?

Sentinel lymph node dissection

What do you do with a mammotome biopsy that returns as "atypical hyperplasia"?

Open needle loc biopsy as many will have DCIS or invasive cancer

How does tamoxifen work?

It binds estrogen receptors

What is the treatment for local recurrence in breast after lumpectomy and radiation?

"Salvage" mastectomy

Can tamoxifen prevent breast cancer?

Yes - in the breast cancer prevention trial of 13,000 women at increased risk of developing breast cancer, tamoxifen reduced risk by ~50% across all ages

What are common options for breast reconstruction?

- TRAM flap


- Implant


- Latissimus dorsi flap

What is a TRAM flap?

Transverse Rectus Abdominis Myocutaneous flap

Transverse Rectus Abdominis Myocutaneous flap

What are the side effects of tamoxifen?

- Endometrial cancer (2.5x relative risk)


- DVT


- PE


- Cataracts


- Hot flashes


- Mood swings

In high-risk women, is there a way to reduce the risk of developing breast cancer?

Yes, tamoxifen for 5 years will lower the risk by up to 50%, but, with an increased risk of endometrial cancer and clots, it must be an individual patient determination

What is the common adjuvant therapy for a premenopausal patient with node +, ER - breast cancer?

Chemotherapy

What is the common adjuvant therapy for a premenopausal patient with node+, ER + breast cancer?

Chemotherapy + Tamoxifen

What is the common adjuvant therapy for a premenopausal patient with node -, ER + breast cancer?

Tamoxifen

What is the common adjuvant therapy for a postmenopausal patient with node +, ER + breast cancer?

Tamoxifen, +/- chemotherapy

What is the common adjuvant therapy for a post-menopausal patient with node +, ER - breast cancer?

Chemotherapy, +/- tamoxifen

What type of chemotherapy is usually used for breast cancer?

- CMF (Cyclophosphamide, Methotrexate, 5-Fluorouracil)


OR


- CAF (Cyclophosphamide, Adriamycin, 5-Fluorouracil)

Chemotherapy for high-risk tumors with negative lymph nodes should be considered. What makes a tumor "HIGH RISK"?

High risk:


- >1 cm in size


- Lymphatic / vascular invasion


- Nuclear grade (high)


- S phase (high)


- ER negative


- HER-2 / neu over-expression

What does DCIS stand for?

Ductal Carcinoma In Situ

What is DCIS also known as?

Intraductal Carcinoma

Describe DCIS?

Cancer cells in the duct without invasion (in situ: cells do not penetrate the basement membrane)

What are the signs / symptoms of DCIS?

Usually none; usually non-palpable

What are the mammographic findings of DCIS?

Microcalcifications

How is the diagnosis of DCIS made?

Core or open biopsy

What is the most aggressive histologic type of DCIS?

Comedo

What is the risk of lymph node metastasis with DCIS?

<2% (usually when microinvasion is seen)

What is the major risk with DCIS?

Subsequent development of infiltrating ductal carcinoma in the same breast

What is the treatment for DCIS with a tumor <1 cm (low grade)?

Remove with 1 cm margins +/- XRT

What is the treatment for DCIS with a tumor >1 cm (low grade)?

Perform lumpectomy with 1 cm margins and radiation or total mastectomy (no axillary dissection)

What is a total (simple) mastectomy?

Removal of the breast and nipple without removal of the axillary nodes (always remove nodes with invasive cancer)

When must a simple mastectomy be performed for DCIS?

Diffuse breast involvement (eg, diffuse microcalcifications), >1 cm and contraindicatiosn to radiation

What is the role of axillary node dissection with DCIS?

No role in true DCIS (ie, without microinvasion); some perform a sentinel lymph node dissection for high-grade DCIS

What is adjuvant for DCIS?

1. Tamoxifen


2. Post-lumpectomy XRT

What ist he role of tamoxifen in DCIS?

Tamoxifen for 5 years will lower the risk up to 50%, but with increased risk of endometrial cancer and clots; it must be an individual patient determination

What is a memory aid for the breast in which DCIS breast cancer arises?

Cancer arises in the same breast as DCIS (DCIS = Directly in same breast)

What is LCIS?

Lobular Carcinoma In Situ (carcinoma cells in lobules of the breast without invasion)

What are the signs / symptoms of LCIS?

There are none

What are the mammographic findings of LCIS?

There are none

How is the diagnosis of LCIS made?

LCIS is found incidentally on biopsy

What is the major risk of LCIS?

Carcinoma of either breast

Which breast is most at risk for developing an invasive carcinoma?

Equal risk in both breasts! Think of LCIS as a risk marker for future development of cancer in either breast.

What percentage of women with LCIS develop an invasive breast carcinoma?

~30% in 20 years after diagnosis of LCIS

What type of invasive breast cancer do patients with LCIS develop?

Most commonly, infiltrating ductal carcinoma, with equal distribution in the contralateral and ipsilateral breasts

What medication may lower the risk of developing breast cancer in LCIS?

Tamoxifen for 5 years will lower the risk up to 50%, but with an increased risk of endometrial cancer and clots; it must be an individual patient determination

What is the treatment of LCIS?

Close follow-up (or bilateral simple mastectomy in high-risk patients)

What is the major difference in the subsequent development of invasive breast cancer with DCIS and LCIS?

LCIS cancer develops in either breast; DCIS cancer develops in the ipsilateral breast

How do you remember which breast is at risk for invasive cancers in patients with LCIS?

Think: LCIS = Liberally in either breast

What is the most common cause of bloody nipple discharge in a young woman?

Intraductal papilloma

What is the most common breast tumor in patients younger than 30 years?

Fibroadenoma

What is Paget's disease of the breast?

Scaling rash / dermatitis of the nipple caused by invasion of skin by cells from a ductal carcinoma

What are the common options for breast reconstruction after a mastectomy?

- Saline implant


- TRAM flap

What is the incidence of breast cancer in men?

<1% of all breast cancer cases (1/150)

What is the average age at diagnosis of breast cancer in males?

65 years of age

What are the risk factors for male breast cancer?

- Increased estrogen


- Radiation


- Gynecomastia from increased estrogen


- Estrogen therapy


- Klinefelter's syndrome (XXY)


- BRCA2 carriers

Is benign gynecomastia a risk factor for male breast cancer?

No

What type of breast cancer do men develop?

Nearly 100% of cases are ductal carcinoma (men do not usually have breast lobules)

What are the signs / symptoms of breast cancer in men?

- Breast mass (most are painless)


- Breast skin changes (ulcers, retraction)


- Nipple discharge (usually blood or a blood-tinged discharge)

What is the most common presentation of male breast cancer?

Painless breast mass

How is breast cancer in men diagnosed?

Biopsy and mammogram

What is the treatment of male breast cancer?

1. Mastectomy


2. Sentinel LN dissection of clinically negative axilla


3. Axillary dissection if clinically positive axillary LN

What is the most common cause of green, straw-colored, or brown nipple discharge?

Fibrocystic disease

What is the most common cause of breast mass after breast trauma?

Fat necrosis

What is Mondor's disease?

Thrombophlebitis of superficial breast veins

What must be ruled out with spontaneous galactorrhea (+/- amenorrhea)?

Prolactinoma (check pregnancy test and prolactin level)

What is cystosarcoma phyllodes?

Mesenchymal tumor arising from breast lobular tissue; most are benign



Note: "sarcoma" is a misnomer, as the vast majority are benign, 1% of breast cancers

What is the usual age of the patient with cystosarcoma phyllodes?

35-55 years (usually older than the patient with fibroadenoma)

What are the signs/symptoms of cystosarcoma phyllodes?

Mobile, smooth breast mass that resembles a fibroadenoma on exam, mammogram / ultrasound findings

How do you diagnose cystosarcoma phyllodes?

Through core biopsy or excision

What is the treatment of cystosarcoma phyllodes?

- If benign, wide local excision


- If malignant, simple total mastectomy

What is the role of axillary dissection with cystosarcoma phyllodes tumor?

Only if clinically palpable axillary nodes, as the malignant form rarely spreads to nodes (most common site of metastasis is the lung)

Is there a role for chemotherapy with cystosarcoma phyllodes?

Consider it if large tumor (>5 cm) and "stromal overgrowth"

What is fibroadenoma?

Benign tumor of the breast consisting of stromal overgrowth, collagen arranged in "swirls"

What is the clinical presentation of a fibroadenoma?

Solid, mobile, well-circumscribed round breast mass, usually <40 years of age

How is fibroadenoma diagnosed?

- Negative needle aspiration looking for fluid


- Ultrasound


- Core biopsy

What is the treatment for fibroadenoma?

Surgical resection for large or growing lesions; small fibroadenomas can be observed closely

What is a fibroadenoma's claim to fame?

Most common breast tumor in women <30 years

What is fibrocystic disease of the breast?

Common benign breast condition consisting of fibrous (rubbery) and cystic changes in the breast

What are the signs / symptoms of fibrocystic disease of the breast?

Breast pain or tenderness that varies with the menstrual cycle; cysts; and fibrous ("nodular") fullness

How is fibrocystic disease of the breast diagnosed?

Through breast exam, history, and aspirated cysts (usually straw-colored or green fluid)

What is the treatment for symptomatic fibrocystic disease?

- Stop caffeine


- Pain meds (NSAIDs)


- Vitamin E, evening primrose oil (danazol and OCP as last resort)

What is done if the patient has a breast cyst?

- Needle drainage: if aspirate is bloody or a palpable mass remains after aspiration, an open boipsy is performed


- If the aspirate is straw colored or green, the patient is followed closely; then, if there is recurrence, a second aspiration is performed


- Re-recurrence usually requires open biopsy

What is mastitis?

Superficial infection of the breast (cellulitis)

In what circumstances does mastitis most often occur?

Breast-feeding

What bacteria are most commonly causing mastitis?

S. aureus

How is mastitis treated?

Stop breast-feeding and use a breast pump instead; apply heat; administer antibiotics

Why must the patient with mastitis have close follow-up?

To make sure that she does not have inflammatory breast cancer!

What are the causes of breast abscesses?

- Mammary ductal ectasia (stenosis of breast duct)


- Mastitis

What is the most common bacteria to cause breast abscess?

- Nursing = S. aureus


- Non-lactating = mixed infection

What is the treatment of breast abscess?

- Antibiotics (Eg, dicloxacillin)


- Needle or open drainage with cultures taken


- Resection of involved ducts if recurrent


- Breast pump if breast-feeding

What is lactational mastitis?

Infection of the breast during breastfeeding - most commonly caused by S. aureus; treat with antibiotics and follow for abscess formation

What must be ruled out with a breast abscess in a non-lactating woman?

Breast cancer!

What is male gynecomastia?

Enlargement of the male breast

What are the causes of male gynecomastia?

- Meds


- Illicit drugs (marijuana)


- Liver failure


- Increased estrogen


- Decreased testosterone

What is the major differential diagnosis for male gynecomastia in the older patient?

Male breast cancer

What is the treatment of male gynecomastia?

- Stop or change medications


- Correct underlying cause if there is a hormonal imbalance


- Perform biopsy or subcutaneous mastectomy (ie, leave nipple) if refractory to conservative measures and time