Tumour of Interosseous Membrane Forearm.

ABSTRACT

25-year old female presented with swelling on dorsal aspect of proximal third of forearm with difficulty in supination and pronation. Swelling was excised and sent for histopathological examination. Biopsy report showed as - benign spindle cell tumour favouring fibromatosis. Extra adbominal fibromatosis from interosseous membrane of forearm is a rare presentation. Conclusion: Athough it is rare entity differential diagnosis should be kept in mind if there is swelling in proximal third of forearm presented with restriction of supination and pronation. Because these tumours are locally aggressive, early diagnosis and treatment are crucial to minimize morbidity.