Common Skin Lesions: Fibrous Lesions

Question 1

SKIN TAGS Clinical Feature

Answer 1

• small (1-10 mm), soft, skin-coloured or darker pedunculated papule, often polypoid
• sites: eyelids, neck, axillae, inframammary, and groin

Question 2

SKIN TAGS

Pathophysiology

Answer 2

benign outgrowth of skin

Question 3

SKIN TAGS

Epidemiology

Answer 3

middle-aged and elderly, F>M, obese, can increase in size and number during pregnancy

Question 4

SKIN TAGS

Differential Diagnosis

Answer 4

pedunculated seborrheic keratosis, compound or dermal melanocytic nevus, neurofibroma,
fibroepithelioma of Pinkus (rare variant of BCC), nevus lipomatosis supercialis

Question 5

SKIN TAGS

Management

Answer 5

excision, electrodessication, cryosurgery

Question 6

SKIN TAGS are also known as…

Answer 6

Acrochordons

• Fibroepithelial polyps

Question 7

• button-like, rm dermal papule or nodule, skin-coloured to red-brown
• majority are asymptomatic but may be pruritic and/or tender
• site: legs > arms > trunk
• dimple sign (Fitzpatrick’s sign): lateral compression causes dimpling of the lesion

Answer 7

DERMATOFIBROMA

Clinical Feature

Question 8

DERMATOFIBROMA

Pathophysiology

Answer 8

benign tumour due to broblast proliferation in the dermis

Question 9

DERMATOFIBROMA

Etiology (unknown and eruptive)

Answer 9

• unknown; may be associated with history of minor trauma (e.g. shaving or insect bites)
• eruptive dermatobroma can be associated with SLE

Question 10

DERMATOFIBROMA

Epidemiology

Answer 10

adults, F>M

Question 11

DERMATOFIBROMA

Differential Diagnosis

Answer 11

dermatofibrosarcoma protuberans, malignant melanoma, Kaposi’s sarcoma, blue nevus

Question 12

DERMATOFIBROMA Investigations

Answer 12

biopsy if diagnosis is uncertain

Question 13

DERMATOFIBROMA Management

Answer 13

• no treatment required

* excision if bothersome