1
Q
what is helpful to determine a BCC
A
stretch the skin around the lesion, and look for a rolled, pearly border
2
Q
what is first step when suspect BCC
A
biopsy
3
Q
why biopsy vs. surgical excision
A
don’t cut too much out if benign
4
Q
5 DDx of BCC
A
- intradermal nevus
- sebaceous hyperplasia
- angiofibroma
- seborrheic keratosis
- SCC
5
Q
feat. of intradermal nevus
A
- pigmented or skin colored
- early in life
- no rolled border
6
Q
feat. of sebaceous hyperplasia
A
- may be telangectagia
- somtimes a central dimple
7
Q
feat. of angiofibroma
A
- flesh-colored to light red, firm papule
- oft. on nose
- may be multiple
8
Q
feat. of seborrheic keratosis
A
- rough irregular surface
- stuck on appearcnce
- not bpearly
- no telantectasia
9
Q
etiology of BCC
A
- most common
- UV damage
- PTCH tumor supressor gene mutation
10
Q
5 BCC risk factors
A
- fair skin
- UV
- ionizing rads or arsenic
- immun supression
- genetic conditions
11
Q
5 BCC subtypes
A
- nodular
- superficial
- ulcerated
- pigmented
- morpheaform
12
Q
feat. of nodular
A
- most common type
- pearly papule or nodule
- head and neck
13
Q
feat. of superficial
A
- pink or translucent in color, rolled border
- patch or thin plaque, may be scaly
- DDx - SCC, or AK
14
Q
feat. of ulcerated
A
- feat of BCC
- leasion is grossly or micro ulcerated
15
Q
feat. of pigmented
A
- BCC with globules of dark pigment
- DDx is melanoma
16
Q
feat. of morpheaform
A
- looks like a scar bound down with white
17
Q
Tx of BCC
A
surg - excision with 3-4mm borders - mohs - test in lab non surg - imiquimod cream - 5-fu rads - not for young
18
Q
BCC course
A
- locally invasive
- mets are rare
- at risk for dev. of other skin CA
