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76 Cards in this Set
- Front
- Back
- 3rd side (hint)
The intrinsic pathway of apoptosis involves Bax which is ___-apoptotic and Bcl-2 which is ____-apoptotic. Changes in proportions of anti- and pro-apoptotic facts lead to increased mitochondria permeability and cytochrome c release
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Bax- pro, Bcl-2 = anti
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The brain, bacterial abscess, and pleural effusions are considered ____ necrosis
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liquefactive
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TB and systemic fungi infections cause ____ necrosis
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caseous
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The pancreas via saponification goes through ____ necrosis
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fatty
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Blood vessel go through ____ necrosis
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fibrinoid
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This type of necrosis is common in the limbs and GI tract
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gangrenous necrosis
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Is cell injury caused by fatty change reversible?
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Yes
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Is cell injury that results in nuclear pyknosis, karyolysis (nuclear fading) and karyorrhexis (nuclear fragmentation) reversible or irreversible?
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irreversible
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Is plasma membrane damage to the cell, lysosomal rupture and mitochondrial permeability reversible or irreversible modes of cell injury?
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irreversible
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What are some organs that are susceptible to hypoxia?
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heart (subendocardial tissue), kidney, neurons, liver (area around central vein), watershed areas (splenic flexure, ACA/MCA)
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Infarctions of the lung, liver or intestine are red or white infarctions?
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red
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Infarctions are divided into 2 types according to the amount of blood present:
White infarctions (anemic infarcts) affect solid organs such as the spleen, heart and kidneys wherein the solidity of the tissue substantially limits the amount of nutrients (blood/oxygen/glucose/fuel) that can flow into the area of ischemic necrosis. Similar occlusion to blood flow and consequent necrosis can occur as a result of severe vasoconstriction as illustrated in severe Raynaud's phenomenon that can lead to irreversible gangrene. |
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Reperfusion injury is due to damage by ____
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free radicals
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The heart, kidney, and spleen undergo red or white infarction?
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white
Explain defintion = |
Red infarctions
(hemorrhagic infarcts), generally affect the lungs or other loose organs (testis, ovary, small intestines). The occlusion consists more of red blood cells and fibrin strands. Characteristics of red infarcts include: -occlusion of a vein -loose tissues that allow blood to collect in the infarcted zone -tissues with a dual circulatory system (lung, small intestines) -tissues previously congested from sluggish venous outflow -reperfusion (injury) of previously ischemic tissue that is associated with reperfusion-related diseases[6] such as - - Myocardial infarction, stroke (cerebral infarction), shock-resuscitation, replantation surgery, frostbite, burns organ transplantation |
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Is Hypovolemic/cardiogenic shock high or low output failure?
What happens to the TPR? Is the patient hot or cold and clammy? |
low output failure,
increase in TPR, cold/clammy pt |
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Is septic shock high or low output failure?
What happens to the TPR? Is the patient hot or cold and clammy? |
-high output failure,
-decrease in TPR, -hot patient due to dilated arterioles, -high venous return |
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Increased pressure such as nephrolithiasis can lead to reduction in the size or number of cells. This is known as ____
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atrophy
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Granulation tissue is highly vascularized and ____
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fibrotic
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Scarring is ____ deposition resulting in altered structure and function
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collagen
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____ inflammation is mediated by neutrophils, eosinophils, and antibody mediated
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Acute
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_____ inflammation is mononuclear cell mediated. Associated with blood vessel proliferation, fibrosis. Granuloma: nodular collections of epitheliod macrophages or giant cels
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Chronic
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Neutrophils exit from blood vessels at sites of tissue injury via what 4 steps?
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rolling,
tight binding, diapedesis, migration |
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E-selectin and P-selectin is expressed on the vasculature/stroma and is responsible for what stage of leukocyte extravasation?
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rolling
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E-selectin
P-selectin is expressed on the vasculature/stroma and is responsible for leukocyte extravasation |
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ICAM-1 expressed on the vasculature/stroma and LFA-1 expressed on the leukocyte is responsible for what stage of leukocyte extravasation?
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tight binding
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ICAM-1
expressed on the vasculature/stroma and LFA-1 expressed on the leukocyte is responsible for leukocyte extravasation |
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PECAM1 is responsible for what stage of leukocyte extravasation?
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diapedesis--> leukocyte travels between endothelial cells and exits blood vessel
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PECAM1
is responsible for leukocyte extravasation |
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What bacterial products mediate neutrophil chemotaxis?
Name 4 |
C5a,
IL-8, LTB4, Kallikrein |
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Free radicals can be eliminated by the enzymes catalase, superoxide dismutase, glutathione peroxidase, spontaneous decay, or antioxidants (vitamins __, ___ and, ___)
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A
C E Free radicals can be eliminated by the enzymes = 5ct |
enzymes catalase
superoxide dismutase glutathione peroxidase spontaneous decay antioxidants |
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CCl4 can cause free radical injury of the _____ leading to necrosis and _____
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liver,
fatty change |
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Reperfusion after anoxia, especially after thrombolytic therapy can lead to free radical injury. The free radical injury is mostly mediated by _____
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superoxide
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What are the three stages of wound healing?
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inflammatory,
proliferative, remodeling |
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Fibroblasts, myofibroblasts, endothelial cells, and keratinocytes mediate what phase of wound healing?
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Proliferative
(2-3 days after wound) |
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This stage of wound healing is characterized by deposition of granulation tissue and collagen, angiogenesis, epithelial cell proliferation, dissolution of clot, and wound contraction
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Proliferative phase
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This stage of wound healing is mediated by fibroblasts and is characterized by Type III collagen being replaced by Type I collagen--> leads to increased tensile strength of tissue
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Remodeling
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This cytokine produced by macrophages induce and maintain granuloma formation.
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TNF-alpha, anti-TNF drugs can break down granulomas, leading to disseminated disease
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Name some granulomatous disease?
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(Bartonella Henselae) cat scratch Dz
Berylliosis Crohn's disease leprosy histoplasmosis sarcoidosis syphilis, TB |
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Is Transudate or exudate hypocellular and protein poor?
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transudate
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Transudate is caused by a ____ in hydrostatic pressure and a ____ in oncotic pressure
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increase,
decrease |
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Exudate usually occurs due to what two conditions?
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lymphatic obstruction
or inflammation |
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Does inflammation and infection cause RBCs to fall at a slower or faster rate within a test tube?
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faster
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Infections,
inflammation, Cancer, Pregnancy, SLE cause the ESR to go up or down? |
Increase the ESR
What causes ESR to Increaase = 5ct |
Infections,
Inflammation, Cancer, Pregnancy, SLE |
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Sickle cell,
polycythemia CHF cause the ESR to go up or down? |
Decrease the ESR
Whst causes a decrease in ESR = 3ct |
Sickle cell
polycythemia CHF |
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What is one of the leading causes of fatality from toxicologic agents in children?
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Iron poisoining
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____ poisoning leads to cell death due to peroxidation of membrane lipids. Its symptoms can be acute such as gastric bleeding or chronic such as metabolic acidosis, scarring leading to GI obstruction
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Iron
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____ demonstrated via beta-pleated sheets
and apple-green birefringence of Congo red stain under polarized light |
Amyloidosis
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Amylodosis can be caused by A___, an acute phase reactant
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AA
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Transthyretin is derived from A___ and is seen amyloidosis seen in senile cardiac disease
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AF
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Amylin is a protein derived from A___ and is an amyloidosis seen in diabetes mellitus type 2
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AE
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Medullary carcinoma of the thyroid will produce A-CAL, which is derived from _____, and can cause amyloidosis
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calcitonin
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What is the amyloid protein associated with Alzheimer's disease?
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beta-amyloid derived from =
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amyloid precursor protein
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What is the amyloid protein that is dialysis associated?
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B2-microglobulin
is associated with = |
dialysis
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Abnormal proliferation of cells with loss of size, shape and orientation is termed ___
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dysplasia
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This describes neoplastic cells that have not invaded the basement membrane. There is high nuclear/cytoplasmic ratio and clumped chromatin. Neoplastic cells encompass the entire thickness
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Carcinoma in situ
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____plasia is irreversible and describes abnormal cells lacking differentiation, resemble primitive cells of same tissue, often equated with undifferentiated malignant neoplasms. Little or no resemblance to tissue of origin
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anaplasia
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____plasia is fibrous tissue formation in response to neoplasm
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desmoplasia
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Is grade or stage the degree of cellular differentiation based on histologic appearance of tumor?
Usually graded 1-4 based on degree of differentiation and number of mitoses per high power field; character of tumor itself |
Grade
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Does stage or grade have more prognostic value usually?
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stage
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Is grade or stage the degree of localization/spread based on site and size of primary lesion, spread to regional lymph nodes, presence of metastases; spread of tumor in a specific patient
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stage
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A rhabdomyosarcoma is malignant transformation of ____ muscle
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skeletal
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A _____ is malignant transformation of connective tissue
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fibrosarcoma
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Is a mature teratoma benign or malignant in a male?
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malignant
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The term _____ implies epithelial origin, whereas the term ____ denotes mesenchymal origin. Both terms imply malignancy
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carcinoma,
sarcoma |
epithelial origin
mesenchymal origin |
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Cachexia means =
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Any general reduction in vitality and strength of body and mind resulting from a debilitating chronic disease
Cachexia is usually mediated by what cytokine? |
TNF-alpha
IFN-Y IL-6 |
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Down's syndrome is associated with what neoplasm?
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ALL
AML |
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Xeroderma pigmentosum and albinism are associated with what neoplasms?
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-melanoma
-basal cell carcinoma -especially squamous cell carcinomas of skin |
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Chronic atrophic gastritis,
pernicious anemia, postsurgical gastric remnants are associated with what neoplasms? |
Gastric adenocarcinoma
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Chronic atrophic gastritis,
pernicious anemia, postsurgical gastric remnants |
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Tuberous sclerosis (facial angiofibroma, seizures, and mental retardation) is associated with what neoplasms?
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astrocytoma, angiomyolipoma, and cardiac rhabdomyoma
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Actinic keratosis is associated with what neoplasm?
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squamous cell carcinoma of skin
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Barrett's esophagus is associated with what neoplasm?
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Esophageal adenocarcinoma
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Plummer-Vinson syndrome
(atrophic glossitis, esophageal webs, anemia; all due to iron deficiency) is associated with what neoplasm? |
squamous cell carcinoma of esophagus
aka = |
Plummer-Vinson syndrome
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Cirrhosis (alcoholic, hepatitis B or C) is associated with what neoplasm?
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hepatocellular carcinoma
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The condition ulcerative colitis is associated with what neoplasm?
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colonic adenocarcinoma
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Paget's disease of the bone is associated with what neoplasm?
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secondary osteosarcoma and fibrosarcoma
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Immunodeficiency states predisposed the person to develop what neoplasm?
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malignant lymphomas
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AIDS predisposes a person to develop what neoplasms?
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aggressive malignant lymphomas
(non-Hodgkin's) Kaposi's sarcoma |
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Autoimmune diseases (Hashimoto's thyroiditis and myasthenia gravis) is associated with what neoplasm?
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lymphoma
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Acanthosis nigricans (hyperpigmentation and epidermal thickening) is associated with what neoplasm?
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visceral malignancy
(stomach, lung, uterus) |
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Dysplastic nevus is associated with what neoplasm?
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malignant melanoma
Can be seen in what Dyspalstic event = |
Dysplastic nevus
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