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Minor Surgery II Final > Week 7 > Flashcards

Flashcards in Week 7 Deck (20)
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1

Why do basal cell carcinomas have a limited capacity to metastasize?

Due to the absence of growth factors derived from the stroma of the original tumor site.

2

T/F?
Problem locations for BCCs are around the eyes, in the nasolabial folds, around the ear canal, and in the posterior auricular sulcus

True

3

Persons aged 55-75 have a ______ -fold higher incidence of BCCs than those younger than 20.

Persons aged 55-75 have a 100-fold higher incidence than those younger than 20

4

About ____ percent of patients who have had one BCC will develop another lesion within five years

About 40% of patients who have had one BCC will develop another lesion within five years

5

What is the most important environmental risk factor for developing BCCs?

Chronic ultraviolet (UV) radiation exposure most important risk factor!

6

T/F?
Frequency and intensity of sun exposure – intermittent, intense increments increases the risk of BCC more than a similar dose delivered more continuously over the same period of time.

True

7

Describe a “rodent ulcer”

-Center ulcerates/bleeds, accumulates crust/scale
-Ulcerated areas heal with scarring
-Patients often assume their conditions are improving.
-Cycle of growth, ulceration, and healing continues as the mass extends peripherally and deeper
-Lesions may become enormous!

8

T/F?
The borders of a morpheaform BCC are indistinct and blend with normal skin making border localization of this tumor by inspection or biopsy impossible

True

9

T/F?
Treatment of morpheaform BCCs consists of wide excision or, preferably, Mohs micrographic surgery.

True

10

Diagnosis of BCC must be confirmed by ______________

Biopsy

11

T/F?
BCCs must be treated early on to avoid the locally invasive, aggressive, and destructive effects on skin and surrounding tissues

True

12

T/F?
Surgical excision of BCCs is more effective than ED&C because there is better margin control, but has less effective margin control than Mohs surgery

True
ED&C= electrodesiccation and curettage

13

Why would one chose radiation therapy to treat a BCC?

-Noninvasive – relative sparing of critical structures
-Relatively painless
-Good for patients who are not otherwise candidates for surgery
-High cure rate for selected lesions

14

List three features of BCCs that account for a high likelihood for recurrence after initial treatment

size, borders, location???

15

T/F?
Existing AKs may become more active after sunlight exposure and may undergo spontaneous remission if sunlight exposure is reduced.

True

16

Induration, inflammation, and oozing of an AK suggests _______________ into ______________

Induration, inflammation, and oozing suggest degeneration into malignancy

17

AKs are most commonly confused with a _________________ which have a “pasted-on” appearance

seborrheic keratosis (SK)

18

T/F?
Because of the marked amount of inflammation that can occur when treating AKs with 5-FU, small regions should be treated at a time in those patients with extensive AKs.

True

19

Over time ____ % of AKs may degenerate into SCCs.

0.3%

20

T/F?
The lazy S excision uses the basic principle of camouflaging a scar in cutaneous surgery by breaking up a straight line, by making two curves

True