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  • Title: [A patient with muscular torticollis caused by nodular fasciitis in the sternocleidomastoid muscle (SCM)].
    Author: Hemmi S, Murakami T, Shirabe T, Sunada Y.
    Journal: Rinsho Shinkeigaku; 2002 Sep; 42(9):864-7. PubMed ID: 12710086.
    Abstract:
    Nodular fasciitis is a benign pseudosarcomatous proliferative lesion which is frequently misdiagnosed as malignant tumor clinically and microscopically. It usually occurs as a rapidly enlarging subcutaneous mass on the upper extremities, especially on the forearm. Here we report a patient showing muscular torticollis caused by nodular fasciitis in the sternocleidomastoid muscle (SCM). A 17-year-old woman was hospitalized because of rapidly progressive torticollis. The right SCM was markedly enlarged and firm on palpation. Muscle biopsy taken from the right SCM revealed massive proliferation of spindle shaped fibroblasts infiltrating into the endomysium. These findings coincided with the intramuscular nodular fasciitis. However, different from typical nodular fasciitis, no apparent nodule formation was found in this patient. Instead, diffuse proliferative lesion extended widely into the neck soft tissue. To our knowledge, this is the first report of muscular torticollis caused by nodular fasciitis involving the SCM.
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