Multifocal recurrent adult rhabdomyoma.
The clinical and morphologic features of a recurrent, multifocal, adult, extracardiac rhabdomyoma are reported. This benign skeletal muscle neoplasm is composed of large round to polyhedral cells containing cross striations. The ultrastructural features consist of hypertrophic Z bands, intranuclear inclusions, and numerous mitochondria with linear, intracristal inclusions. The low thymidine labeling index and long potential doubling time correspond wi th the length of time for clinical recurrence.
D000368:Aged; D006801:Humans; D002479:Inclusion Bodies / Q000648:ultrastructure; D008297:Male; D008854:Microscopy, Electron; D009364:Neoplasm Recurrence, Local / Q000473:pathology* / Q000648:ultrastructure; D010610:Pharyngeal Neoplasms / Q000473:pathology* / Q000648:ultrastructure; D012207:Rhabdomyoma / Q000473:pathology* / Q000648:ultrastructure