Pathology
Images
Atlas of dermatopathology
Josef Feit, Hana Jedličková, Günter Burg, Luděk Matyska, Spasoje Radovanovic et al.
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+ Introduction
+ Literature
+ Support
+ Skin biopsy
+ Non-tumorous skin diseases
+ Skin tumors
+ Cysts of the skin and subcutis
+ Soft tissue lesions
+ Some lesions of the oral cavity
+ Dermatovenerology
+ Collection of histological slides by prof. Günter Burg
+ Collection of histological slides by prof. Werner Kempf
+ Collection of histological slides of dr. Ram Chandra Adhikari
Pilar leiomyomas
Introduction

Probably the most common variant of skin leiomyoma.

Clinical signs
  • location: anywhere (often dorsal aspects of extremities)
  • solitary or multiple nodules
  • firm, sometimes painful
  • color: pink

Pilar leiomyomas (780)

Pictures
Histology

Fascicles of smooth muscle, unsharp borders. Fusiform cells with longitudinal striation, thin, cigar shaped nuclei with blunt ends.

Malignant variant is larger, with cellular polymorphism, mitotic activity.

Special staining: van Gieson (yellow), trichrome (pink-red), antibodies against smooth muscle actin.

Pilar leiomyoma (12517)

Pilar leiomyoma, SMA (12518)