Non-Pigmented Lesions, Benign Non-epithelial

Question 0

Superficial Acral Fibromyxoma

Answer 0

Benign non-epithelial neoplasm comprised of fibroblasts and vessels embedded within a myxoid matrix

Question 1

Dermatofibroma

Answer 1

1. Benign Non-epithelial
2. Fitzpatrick Sign
3. Dermal origin, poorly defined margins

Question 2

Acquired Acral Fibrokeratoma

Answer 2

1. Benign non-epithelial
2. Hamartoma
3. Most commonly seen around proximal nail fold

Question 3

Angioleiomyoma

Answer 3

1. Benign non-epithelial
2. Well circumscribed, solitary
3. ANGEL tumor

Question 4

Piloleiomyoma

Answer 4

1. Benign hamartoma (differentiates into pilar smooth m.)
2. Poorly circumscribed, multiple
3. Brown papules/plaques

Question 5

Glomus Tumor

Answer 5

1. Commonly subungually located

2. ANGEL tumor

Question 6

Fibrolipomatous Hamartoma

Answer 6

1. Presents in forefoot/toes causing macrodactyly of digits 1-2
2. Infiltration of nerve by fat and fibrous tissue

Question 7

Lipoma

Answer 7

1. Most common tumor of the soft tissue in body (NOT foot!)

Question 8

Pyogenic Granuloma

Answer 8

1. AKA Lobulated Capillary Hemangioma
2. Pink, red dome shaped papules/nodules
3. Misnomer to denote granulation tissue

Question 9

Capillary Hemangioma

Answer 9

1. Non-lobulated

2. Several types: Cherry, senile, etc…

Question 10

Digital Mucoid Cyst

Answer 10

1. Localized interstitial collection of mucinous substance
2. No epithelial lining –> not true cyst
3. Located at base of distal phalanx