Proliferative Myositis on the Tongue.
- Author:
Myeong Jin PARK
1
;
Gi hyun SEONG
;
Minkee PARK
;
Mi Soo CHOI
;
Seung Phil HONG
;
Byung Cheol PARK
;
MyungHwa KIM
Author Information
1. Department of Dermatology, College of Medicine, Dankook University, Cheonan, Korea. ivymyung@hanmail.net
- Publication Type:Case Report
- Keywords:
Proliferative myositis;
Pseudosarcoma;
Tongue
- MeSH:
Actins;
Diagnosis, Differential;
Diagnostic Errors;
Female;
Fibroblasts;
Humans;
Middle Aged;
Muscle, Smooth;
Myofibroblasts;
Myositis*;
Tongue*;
Vimentin
- From:Korean Journal of Dermatology
2019;57(1):28-31
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
Proliferative myositis is a rare, benign, probably pseudosarcomatous fibroblastic proliferation that typically presents as a rapidly growing soft tissue mass. Its relative rarity, fast growth rate, and unique histopathologic findings may lead to misdiagnosis as a malignant lesion and unnecessary radical surgical excision. A 57-year-old female presented with a non-tender, well-defined, indurated, solitary, hard papule on the median sulcus of the tongue for 2 weeks. Histologic examination revealed numerous fibroblastic or myofibroblastic spindle cells and large ganglion-like cells infiltrating between and around the muscle fascicles. Immunohistochemical staining showed positivity for vimentin, smooth muscle actin, and CD68 and negativity for S-100. Based on these characteristic clinical findings and histopathologic features, the patient was diagnosed with proliferative myositis. Here, we report a rare case of proliferative myositis on the tongue and recommend considering proliferative myositis in the differential diagnosis when a physician encounters a rapidly grown soft tissue mass.
