title: [Importance of microlithiasis in testicular germ cell tumor ultrasound].
abstract: BACKGROUND
  Testicular microlithiasis (TM) is an infrequent finding in testicular ultrasound and its clinical importance has not been completely defined. We analyzed the ultrasounds of patients with testicular germ cell tumors in order to analyze the correlation between TM, histological findings and clinical variables.
  
  
  METHODS
  Fifty-seven patients with germ cell tumors and radical orchiectomy were included. Clinical, pathological, and echographic data were analyzed.
  
  
  RESULTS
  TM was observed in 27 men (48.27%) and was absent in 30 (52.6%). Patients with TM had a greater likelihood of nonseminomatous germ cell tumors (NSGCT) vs seminomatous (55.6% vs 30%, p=0.05), stage II/III testicular cancer (51.8% vs 16.7%, p=0.005), positive surgical margins (18.5% vs 0%, p=0.021), and spermatic cord invasion (14.8% vs 0%, p=0.048). No significant difference was found in respect to other histopathological variables.
  
  
  CONCLUSIONS
  This study showed that TM in testicular tumors is associated to NSGCT, advanced clinical stage, positive surgical margins, and spermatic cord invasion.
authors.affiliation: Departamento de Urología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Tlalpan, México DF. m.villalobos.gollas@gmail.com
authors.forename: M
authors.initials: M
authors.lastname: Villalobos  Gollás
authors.forename: O
authors.initials: O
authors.lastname: Negrete  Pulido
authors.forename: C
authors.initials: C
authors.lastname: Mendez Probst
authors.forename: R
authors.initials: R
authors.lastname: Fuentes Corona
authors.forename: M
authors.initials: M
authors.lastname: Sotomayor de Zavaleta
authors.forename: G
authors.initials: G
authors.lastname: Feria Bernal
mesh_terms: D000328:Adult; D006801:Humans; D020347:Lithiasis / Q000150:complications* / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D009373:Neoplasms, Germ Cell and Embryonal / Q000150:complications* / Q000000981:diagnostic imaging*; D013733:Testicular Diseases / Q000150:complications* / Q000000981:diagnostic imaging*; D013736:Testicular Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging*; D014463:Ultrasonography