19.3 - Epithelial tumors

Question 1

raised, discolored plaques with waxy, stuck on appearance - diagnosis?

Answer 1

seborrheic keratosis

Question 2

what is leser trelat sign? what does it signify?

Answer 2

• sudden onset of multiple seborrheic keratoses

- suggests underlying carcinoma of GI tract

Question 3

acanthosis nigricans is seen in what conditions?

Answer 3

• insulin resistance

- malignancy

Question 4

elevated nodule with a central, ulcerated crater surrounded by dilated (telangiectatic) vessels and pink, pearl like papule - diagnosis?

Answer 4

basal cell carcinoma

Question 5

what is the classic location of basal cell carcinoma?

Answer 5

UPPER lip

Question 6

what is the histology for basal cell carcinoma?

Answer 6

nodules of basal cells with peripheral palisading formation

Question 7

squamous cell carcinoma is characterized by formation of ______ ______ on histology?

Answer 7

keratin pearls

Question 8

what is the classic location of squamous cell carcinoma?

Answer 8

LOWER lip

Question 9

actinic keratosis is a precursor lesion of _________________

Answer 9

squamous cell carcinoma

Question 10

what is a keratoacanthoma?

Answer 10

well-differentiated squamous cell carcinoma that develops rapidly and regresses spontaneously; presents as a cup-shaped tumor filled with keratin debris