Proliferative Myositis: A Rare Pseudosarcoma in Children

Acharya As Kulkarni Rv

doi:10.4172/2165-7920.1000487

Abstract

Proliferative myositis is one of several benign, rapidly enlarging tumours of soft tissue that are often confused with sarcoma. We present an unusual case of proliferative myositis in a 7 year female involving right submandibular region. Proliferative myositis is a rare, inflammatory tumour that is often misdiagnosed as sarcoma. The clinical course of proliferative myositis is benign, and simple excision is curative.

Highlights

Proliferative Myositis (PM), first described by Kern in 1960, is a rare pseudosarcomatous lesion with special predilection for trunk and upper extremities, though it rarely involves the head and neck region [1]
Majority of the patients are over the age of 45 years, but it may be seen in children [2]
Its rapid growth and bizarre microscopic appearance often lead to misdiagnosis of soft tissue sarcoma [3]

Summary

Introduction

Proliferative Myositis (PM), first described by Kern in 1960, is a rare pseudosarcomatous lesion with special predilection for trunk and upper extremities, though it rarely involves the head and neck region [1]. Its rapid growth and bizarre microscopic appearance often lead to misdiagnosis of soft tissue sarcoma [3]. We are reporting a similar interesting case of proliferative myositis in female child, diagnosed on histopathology. A 7 year old female child was admitted in YCR hospital, Latur with complaint of painless swelling in right submandibular region, since last 3 months. Immobile mass measuring 4 × 4 cm was palpated in right submandibular region. Ultasonographic findings showed a hypoechoic lesion involving the right mylohoid muscle without prominent vascularity, suggesting a soft tissue neoplasm. In view of high clinical suspicion of soft tissue neoplasm, the lesion was widely excised and sent to histopathology department. We received a nodular mass measuring 4 × 3 × 3 cm. J Clin Case Rep 5: 487. doi:10.4172/2165-7920.1000487

Discussion

Conclusion