title: [Proliferative myositis--a little-known pseudomalignant lesion].
abstract: The leading symptom of proliferative myositis is a rapidly growing hard tumor in the muscle. The disease is rare and therefore widely unknown. We observed a case of proliferative myositis in a 54-year-old female. We initially interpreted the hard tumor in the left musculus sternocleidomastoideus and its rapid growth as a malignant disease. The histological findings finally led to the correct diagnosis. In the light of the literature of 78 reported cases, a presumptive diagnosis can already be suspected from the clinical examination. The addition of CT scan and fine needle aspiration is highly diagnostic.
authors.affiliation: Departement Pathologie, Universitätsspital Zürich.
authors.forename: D
authors.initials: D
authors.lastname: Flury
authors.forename: A R
authors.initials: AR
authors.lastname: von Hochstetter
authors.forename: U
authors.initials: U
authors.lastname: Landolt
authors.forename: S
authors.initials: S
authors.lastname: Schmid
mesh_terms: D001706:Biopsy; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008854:Microscopy, Electron; D008875:Middle Aged; D009135:Muscular Diseases / Q000000981:diagnostic imaging / Q000473:pathology; D009220:Myositis / Q000000981:diagnostic imaging / Q000473:pathology*; D009334:Neck Muscles / Q000473:pathology / Q000648:ultrastructure*; D014057:Tomography, X-Ray Computed