Myopericytoma proliferating in an unusual anastomosing multinodular fashion.
We herein describe a case of myopericytoma that proliferated in an unusual fashion. Myopericytoma is described as a group of rare, benign, dermal or subcutaneous tumors that are characterized histologically by a striking, concentric, perivascular proliferation of spindle cells and showing apparent differentiation towards perivascular myoid cells. Myopericytoma forms a morphological continuum with myofibroma/myofibromatosis, glomus tumor and angioleiomyoma. The patient was a 64-year-old woman who demonstrated a recurrent ulcer on an atrophic plaque on her left shin. A histopathological examination of the plaque demonstrated that tumor cells proliferated in an anastomosing multinodular fashion along the vessels in the dermis and subcutaneous tissue. In those nodules, there were numerous, small, concentric proliferations of myoid-appearing spindle cells around small vascular lumina. The present case is an unusual example of myopericytoma, manifesting in a characteristic anastomosing, multinodular, infiltrating fashion.
Division of Dermatology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan.
Takuya
T
Inoue
Division of Dermatology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan.
Noriyuki
N
Misago
Department of Orthopedic Surgery, Japan Community Health-care Organization, Saga Central Hospital, Saga, Japan.
Akihiko
A
Asami
Department of Pathology and Biodefense, Faculty of Medicine, Saga University, Saga, Japan.
Osamu
O
Tokunaga
Division of Dermatology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan.
Yutaka
Y
Narisawa
D001706:Biopsy; D002908:Chronic Disease; D017449:Dermatitis, Allergic Contact / Q000175:diagnosis; D020405:Dermis / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006393:Hemangiopericytoma / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007871:Leg Ulcer / Q000473:pathology; D007889:Leiomyoma / Q000473:pathology* / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D047708:Myofibroma / Q000473:pathology*; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis / Q000601:surgery; D012878:Skin Neoplasms / Q000473:pathology* / Q000601:surgery; D040521:Subcutaneous Tissue / Q000473:pathology
chronic scar; hemangiopericytoma pericytic tumor; myofibroma; myopericytoma