{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,11]],"date-time":"2026-07-11T06:18:55Z","timestamp":1783750735366,"version":"3.55.0"},"reference-count":10,"publisher":"BMJ","issue":"2","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2023,1,26]]},"published-print":{"date-parts":[[2023,2]]},"abstract":"<jats:p>We report a case of myofibroma encasing the ulnar nerve on the medial aspect of the left arm with motor and sensory deficit secondary to compression. Initially, the tumour appeared to be a benign peripheral nerve sheath tumour based on preoperative imaging, with clinical examination positive for left hand clawing and a positive Wartenberg\u2019s and Froment\u2019s sign. However, intraoperative dissection demonstrated that the mass did not originate from the ulnar nerve proper, lowering suspicion for a peripheral nerve sheath tumour. Histopathological analysis showed spindle cell neoplasm, consistent with myofibroma. The patient underwent hand occupational therapy subsequently, with improvement of grip strength from 5 lb to 12 lb by 4 months postoperatively and resolution of clawing of the hand postoperatively. We discuss differentiating features for this rare occurrence of solitary adult myofibroma, where the final diagnosis was only made after formal histopathological analysis.<\/jats:p>","DOI":"10.1136\/bcr-2022-252939","type":"journal-article","created":{"date-parts":[[2023,2,2]],"date-time":"2023-02-02T10:23:52Z","timestamp":1675333432000},"page":"e252939","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Myofibroma mimicking peripheral nerve sheath tumour with ulnar nerve compression symptoms"],"prefix":"10.1136","volume":"16","author":[{"given":"Harvey","family":"Chim","sequence":"first","affiliation":[{"name":"Division of Plastic & Reconstructive Surgery, Department of Surgery, University of Florida College of Medicine, Gainesville, Florida, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4221-0933","authenticated-orcid":false,"given":"Gayle Suk","family":"Wiesemann","sequence":"additional","affiliation":[{"name":"Division of Plastic & Reconstructive Surgery, Department of Surgery, University of Florida College of Medicine, Gainesville, Florida, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elham","family":"Nasri","sequence":"additional","affiliation":[{"name":"Department of Pathology, Immunology and Laboratory Health, University of Florida Health, Gainesville, Florida, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2023,2,2]]},"reference":[{"key":"2025082703513610000_16.2.e252939.1","doi-asserted-by":"crossref","first-page":"43","DOI":"10.1080\/02844310802489079","article-title":"Tumours of peripheral nerves in the upper extremity: a 22-year epidemiological study","volume":"43","author":"Sandberg","year":"2009","journal-title":"Scand J Plast Reconstr Surg Hand Surg"},{"key":"2025082703513610000_16.2.e252939.2","doi-asserted-by":"crossref","first-page":"5086","DOI":"10.12998\/wjcc.v8.i21.5086","article-title":"Peripheral nerve tumors of the hand: clinical features, diagnosis, and treatment","volume":"8","author":"Zhou","year":"2020","journal-title":"World J Clin Cases"},{"key":"2025082703513610000_16.2.e252939.3","doi-asserted-by":"publisher","DOI":"10.1067\/j.cpradiol.2009.01.002"},{"key":"2025082703513610000_16.2.e252939.4","doi-asserted-by":"publisher","DOI":"10.3174\/ajnr.A2257"},{"key":"2025082703513610000_16.2.e252939.5","doi-asserted-by":"crossref","DOI":"10.1002\/pbc.29403","article-title":"Infantile myofibromatosis: excellent prognosis but also rare fatal progressive disease. treatment results of five cooperative weichteilsarkom studiengruppe (CWS) trials and one registry","volume":"69","author":"Sparber-Sauer","year":"2022","journal-title":"Pediatr Blood Cancer"},{"key":"2025082703513610000_16.2.e252939.6","doi-asserted-by":"crossref","first-page":"335","DOI":"10.1111\/j.1365-2559.1993.tb00132.x","article-title":"Solitary myofibroma in adults: clinicopathological analysis of a series","volume":"22","author":"Beham","year":"1993","journal-title":"Histopathology"},{"key":"2025082703513610000_16.2.e252939.7","first-page":"1335","article-title":"Adult myofibroma: a clinicopathological analysis of 15 cases","volume":"50","author":"Jin","year":"2021","journal-title":"Zhonghua Bing Li Xue Za Zhi"},{"key":"2025082703513610000_16.2.e252939.8","first-page":"382","article-title":"Smooth muscle actin: a confirmatory immunohistochemical marker for myofibroma of tongue","volume":"27","author":"Bajpai","year":"2017","journal-title":"J Coll Physicians Surg Pak"},{"key":"2025082703513610000_16.2.e252939.9","doi-asserted-by":"crossref","first-page":"550","DOI":"10.1007\/s11552-014-9729-4","article-title":"Solitary, adult-onset, Intraosseous myofibroma of the finger: report of a case and review of literature","volume":"10","author":"Ma","year":"2015","journal-title":"Hand (N Y)"},{"key":"2025082703513610000_16.2.e252939.10","doi-asserted-by":"publisher","DOI":"10.1177\/1753193415625146"}],"container-title":["BMJ Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bcr-2022-252939","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,8,27]],"date-time":"2025-08-27T10:51:45Z","timestamp":1756291905000},"score":1,"resource":{"primary":{"URL":"https:\/\/casereports.bmj.com\/lookup\/doi\/10.1136\/bcr-2022-252939"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,2]]},"references-count":10,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2023,2,2]]},"published-print":{"date-parts":[[2023,2]]}},"alternative-id":["10.1136\/bcr-2022-252939"],"URL":"https:\/\/doi.org\/10.1136\/bcr-2022-252939","relation":{},"ISSN":["1757-790X"],"issn-type":[{"value":"1757-790X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,2]]}}}