title: Angiomyoma presenting as a painful subcutaneous mass: a diagnostic challenge.
abstract: Angiomyoma of the extremity is a notoriously elusive preoperative diagnosis, as the list of differentials for its described classic clinical features of a painful mobile subcutaneous mass is quite vast. Imaging features described for angiomyomas are far from being specific. On ultrasound, angiomyomas are mostly described as a well-defined solid mass lesion showing robust internal vascularity. On T2-weighted MRI they have been described as homogenous to heterogeneously hyperintense relative to skeletal muscle. We report a pathologically proven angiomyoma around the knee joint in a middle aged man, describe its clinical and imaging features, and outlay an approach in diagnosing this rare entity as a differential for painful subcutaneous mass lesions.
authors.affiliation: Department of Radiodiagnosis, Kasturba Medical College, Manipal, Karnataka, India.
authors.forename: Sandeep
authors.initials: S
authors.lastname: Kumar
authors.affiliation: Department of Pathology, Melaka Manipal Medical College, Manipal, Karnataka, India.
authors.forename: Roumina
authors.initials: R
authors.lastname: Hasan
authors.affiliation: Department of Radiodiagnosis, Kasturba Medical College, Manipal, Karnataka, India.
authors.forename: Satish Babu
authors.initials: SB
authors.lastname: Maddukuri
authors.affiliation: Department of Pathology, Kasturba Medical College, Manipal, Karnataka, India.
authors.forename: Mary
authors.initials: M
authors.lastname: Mathew
mesh_terms: D000328:Adult; D018229:Angiomyoma / Q000175:diagnosis* / Q000601:surgery; D018771:Arthralgia / Q000209:etiology*; D003937:Diagnosis, Differential; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000601:surgery; D014463:Ultrasonography