title: Transrectal ultrasound appearance of squamous cell carcinoma involving the prostate.
abstract: OBJECTIVE
  This report describes the transrectal ultrasound appearance of squamous cell carcinoma of the prostate.
  
  
  METHODS
  One case of squamous cell carcinoma involving the prostate by extension from a primary urethral carcinoma and a second case of radiation-induced primary prostatic squamous cell carcinoma are presented and the ultrasound findings discussed.
  
  
  CONCLUSIONS
  In these 2 cases, squamous cell carcinomas involving the prostate exhibited similar transrectal ultrasound appearances. Both lesions demonstrated an irregular, anterior, relatively hyperechoic appearance.
authors.affiliation: Section of Urology, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA 94304, USA. mkt@icon.palo-alto.med.va.gov
authors.forename: M K
authors.initials: MK
authors.lastname: Terris
mesh_terms: D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009381:Neoplasms, Radiation-Induced / Q000000981:diagnostic imaging; D011471:Prostatic Neoplasms / Q000000981:diagnostic imaging*; D012007:Rectum; D014463:Ultrasonography; D014523:Urethral Neoplasms / Q000473:pathology