Tumors of Dermis

Question 1

Displays dimple-sign = depresses when squeezed

Answer 1

Dermatofibroma aka Benign Fibrous Histiocytoma

Question 2

Very common benign lesion. Occurs on lower legs
Slow growing. Single or multiple
Flesh-colored to pigmented papule

Answer 2

Dermatofibroma aka Benign Fibrous Histiocytoma

Question 3

Can be pruitic. Bleeds when pt shaves legs

Answer 3

Dermatofibroma aka Benign Fibrous Histiocytoma

Question 4

Fibrous rx to past trauma to the skin.

Answer 4

Dermatofibroma aka Benign Fibrous Histiocytoma

Question 5

Benign fibrous histiocytoma known as

Answer 5

Dermatofibroma

Question 6

Benign proliferations of fibroblasts with collagen.
Reddish-brown color.
May be overlying hyperkeratosis and hyperpigmentation

Answer 6

Dermatofibroma

Question 7

Primary fibrosarcoma of skin.
Locally aggressive but rarely metastasizes.
Hypercellular

Answer 7

Dermatofibrosarcoma protuberans

Question 8

Overlying epidermis is thinned
Extends from dermis into subcutaenous fat in honeycomb pattern
Fibroblasts in pinwheel pattern

Answer 8

Dermatofibrosarcoma protuberans