True about keratoacanthoma :
A.Benign tumorB. Malignant skin tumor like squamous cell carcinoma
C. Treatment same as for squamous cell carcinoma
D.Easy to differentiate from squamous cell Ca. histologically
E. Treatment is Mohs surgery
The Answer is. (A) Benign tumor (E) Treatment is
masterly inactivity
Keratoacanthoma is a rapidly developing neoplasm
clinically and histologicaly mimics squamous cell carcinoma. It is a low
grade squamous cell carcinoma originating from the neck of hair follicle
— It is not easily differentiated from sq cell. Ca.
Keratoacanthoma may progress to invasive SCC and hence promt treatment if
advocated
• Histology —
Centre with a keratin filled crater surrounded by proliferating epithelial
cells.
Diagnosis: by skin biopsy
Treatment by curettage, or electro cautry.However
excision is diagnositic and therapeutic.Mohs surgery is margin controlled
surgery, allows for good margin control with minimal tissue removal
