title: Infiltrative pattern of carcinomatosis in extremity muscles on MRI.
abstract: Carcinomas can cause an unusual, infiltrative pattern of metastatic carcinoma in extremity muscles on MRI. To assess this pattern, reports of MRI exams of 907 consecutive patients with a diagnosis of carcinoma were reviewed retrospectively to identify those that mentioned muscle metastasis or myositis in an extremity. Thirty-six (4%) of those reports described muscle metastasis (n=18) or myositis (n=18); based on medical record review and imaging follow-up, 17 cases represented metastases. Metastases manifested as an infiltrative carcinomatosis pattern in five patients, resulted from primary esophageal or gastric adenocarcinomas, and often were misdiagnosed as myositis.
authors.affiliation: Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065; New York Presbyterian Hospital, Weill Cornell Medical College, New York, NY. Electronic address: fas2002@nyp.org.
authors.forename: Fatima
authors.initials: F
authors.lastname: Soliman
authors.affiliation: Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065; Weill Medical College of Cornell University, New York, NY. Electronic address: hwangs1@mskcc.org.
authors.forename: Sinchun
authors.initials: S
authors.lastname: Hwang
authors.affiliation: Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065; Weill Medical College of Cornell University, New York, NY. Electronic address: landaj@mskcc.org.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Landa
authors.affiliation: Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065; Weill Medical College of Cornell University, New York, NY. Electronic address: lefkowir@mskcc.org.
authors.forename: Robert A
authors.initials: RA
authors.lastname: Lefkowitz
authors.affiliation: Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065; Weill Medical College of Cornell University, New York, NY. Electronic address: panicekd@mskcc.org.
authors.forename: David M
authors.initials: DM
authors.lastname: Panicek
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis / Q000556:secondary*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002277:Carcinoma / Q000175:diagnosis*; D005121:Extremities; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D019042:Muscle Neoplasms / Q000175:diagnosis / Q000556:secondary*; D018482:Muscle, Skeletal / Q000473:pathology*; D009362:Neoplasm Metastasis; D012189:Retrospective Studies; D013274:Stomach Neoplasms / Q000473:pathology*
keywords: Carcinomatosis; Infiltrative; MRI; Metastasis; Muscle