title: Intramuscular myxoma: sonographic appearance and sonographically guided needle biopsy.
abstract: The sonographic appearances of four intramuscular myxomas were reviewed. These tumors appeared as well-defined, ovoid masses surrounded by normal muscle. The echogenicity was decreased in all cases, and the presence of small fluid-filled clefts and cystic areas was noted in three of the four lesions. Color Doppler examination was performed in two cases and was negative. Sonographically guided fine-needle aspiration biopsy yielded a thick myxoid substance. Large-core cutting needle biopsy allowed establishment of the diagnosis in one of the two cases in which it was performed. The differential diagnosis of a well-demarcated intramuscular mass with multiple fluid-filled clefts or cystic areas should include intramuscular myxoma.
authors.affiliation: Department of Diagnostic Radiology, University of Texas M.D. Anderson Cancer Center, Houston 77030.
authors.forename: B D
authors.initials: BD
authors.lastname: Fornage
authors.forename: M M
authors.initials: MM
authors.lastname: Romsdahl
mesh_terms: D001707:Biopsy, Needle / Q000379:methods; D005260:Female; D006801:Humans; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000000981:diagnostic imaging / Q000473:pathology*; D009135:Muscular Diseases / Q000000981:diagnostic imaging / Q000473:pathology; D009232:Myxoma / Q000000981:diagnostic imaging* / Q000473:pathology*; D012983:Soft Tissue Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology*; D018615:Ultrasonography, Doppler, Color; D018084:Ultrasonography, Interventional