Low-grade myofibroblastic sarcoma of the levator scapulae muscle: a case report and literature review

Autor: Hiroko Ikeda, Takayuki Nojima, Hirotaka Yonezawa, Hiroaki Kimura, Shingo Shimozaki, Mickhael Bang Langit, Yohei Asano, Shinji Miwa, Kentaro Igarashi, Sei Morinaga, Katsuhiro Hayashi, Yoshihiro Araki, Takashi Kato, Norio Yamamoto, Akihiko Takeuchi, Hiroyuki Tsuchiya
Rok vydání: 2020
Předmět:
Zdroj: BMC Musculoskeletal Disorders
BMC Musculoskeletal Disorders, Vol 21, Iss 1, Pp 1-8 (2020)
ISSN: 1471-2474
Popis: Background Low-grade myofibroblastic sarcoma (LGMS) is described as a distinct atypical myofibroblastic tumor often with fibromatosis-like features and predilection for the head and neck, especially the oral cavity and larynx. LGMS arising in the levator scapulae muscle is extremely rare. Case presentation A 69-year-old woman was admitted to our hospital because she noticed a hard mass in her left neck six months prior. Magnetic resonance images (MRI) showed a soft tissue tumor of the left levator scapulae muscle. A core needle biopsy showed cellular fascicles or a storiform growth pattern of spindle-shaped tumor cells with minimally atypia. Immunohistochemistry revealed focally positive for α-smooth muscle actin (α-SMA), negative for S-100, and a low-grade spindle cell sarcoma was suspected. Following a biopsy, the tumor was resected with a wide surgical margin. Immunohistochemical staining was a positive for vimentin and α-SMA and negative for desmin, CD34, nuclear β-catenin, and h-caldesmon. LGMS diagnosis was determined based on the histopathological findings. The patient was alive with no evidence of disease eight years after the surgery. Conclusions To the best of our knowledge, this is the first case report of LGMS arising in the levator scapulae muscle. In addition to the case report, 48 reports with 103 LGMS cases are reviewed and discussed. In previous reports of LGMS, there were 43 females and 60 males, with a mean age of 43.0 years (range, 2–75). There were 13 (12.6%) patients aged
Databáze: OpenAIRE
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