Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
19 Cards in this Set
- Front
- Back
|
Features of benign solid masses by US
|
Hyperechoic
3 or fewer gentle lobulations Thin echogenic sharply marginated pseudo capsule Ellipsoid shape |
|
|
Features of malignant masses by US
|
Spiculated margin
Taller than wide Angular margins Shadowing Branching pattern Calcifications Microlobulated Disruption of tissue planes |
|
|
Silicone implant, extracapsular rupture on US
|
Snowstorm sign
|
|
|
Silicone implant, intracapsular rupture on US
|
Stepladder sign
|
|
|
Breast US indications
|
First line for patient < 30yo with palpable abnormality, breast feeding or pregnant
Further evaluation of mammographic findings Identification of palpable and non-palpable clinical sx Breast implant problem solving Nipple discharge problem solving US-guided bx 2nd look US following MRI Less likely: - Radiation tx planning - monitoring tx response - whole breast US screening - metastatic dz, unknown primary, negative mammo |
|
|
Indications for Breast MRI
|
Evaluate extent of disease in known CA
Metastatic LN with unknown primary Screening for contralateral breast in newly diagnosed CA Response to therapy Screening in pt with >20-25% lifetime risk: - BRCA1/2 - Untested primary relative of known BRCA1/2 carrier - Strong family hx - previous radiation tx <30yo |
|
|
Horomonal enhancement on breast MRI:
- when is the best time to scan |
Between days 3-14 of the menstrual cycle.
|
|
|
Fribroadenoma on MRI
|
high T1W
High T2W Smooth enhancing mass Pesistant (increasing) kinetics |
|
|
BIRADS descriptors for MASS (4)
|
Round
Lobular Oval Irregular (suspicious) |
|
|
BIRADS descriptors for MARGINS (5)
|
Circumscribed
Microlobulated Obscured Indisctinct/Ill-defined (suspicious) Spiculated (suspicious) |
|
|
BIRADS descriptors for DENSITY (4)
|
Density compared to an equaly volume of breast tissue
High Isodense Low (but w/o fat) Fat-containing radiolucent |
|
|
BIRADS descriptors for Typically-Benign CALCIFICATIONS (9)
|
Skin
Vascular Coarse/Popcorn-like Large rod-like Round (> 1 mm) Punctate (<0.5 mm) Lucent-centered Eggshell/Rim Milk of calcium Suture Dystrophic - post traumatic or XRT |
|
|
BIRADS descriptors for Intermediate concern, suspicious CALCIFICATIONS (2)
|
Amorphous/Indistinct
Coarse Heterogeneous - may represent elvolving dystrophic |
|
|
BIRADS descriptors for higher probability of malignancy CALCIFICATIONS (2)
|
Fine pleomorphic
Fine linear/Fine linear branching |
|
|
BIRADS descriptors for calcifications, DISTRIBUTION MODIFIERS (5)
|
Diffuse/scattered
Regional (> 2 cc, > 1 segment) Grouped/clustered (> 5 calcs) Linear (suspicious) Segmental (suspicious) |
|
|
BIRADS descriptors for SPECIAL CASES (4)
|
Assymetric tubular structure
- dilated duct Intramammary LN Global assymetry - may be concerning if palpable Focal asymmetry - seen in 2 views but lacking characteristics of mass |
|
|
BIRADS descriptors for ASSOCIATED FINDINGS (6)
|
Skin retraction
Nipple retraction Skin thickening Trabecular thickening Skin lesion Axillary adenopathy |
|
|
Subareolar mass
|
Abscess
Montgomery gland cyst Papilloma Cancer |
|
|
Breast mass in a pregnant patient
|
Galctocele
Abscess Fibroadenoma Lactating adenoma Hematoma Fibrocystic change |
