title: [Gynecomastia and Leydig cell tumor, clinically occult].
abstract: OBJECTIVE
  An uncommon case of clinically occult Leydig cell tumor of the testis is described. The literature is reviewed with special reference to the difficulty encountered in making the diagnosis.
  
  
  RESULTS
  The clinical data of a patient with occult Leydig cell tumor of the testis, whose only remarkable feature was a long history of gynecomastia, are presented.
  
  
  CONCLUSIONS
  A hormonal study and scrotal ultrasound evaluation are essential in the diagnosis of this tumor type and should be performed even in the absence of testicular anomalies on palpation.
authors.affiliation: Servicio de Medicina Interna, Hospital del Espíritu Santo, Santa Coloma de Gramanet, Barcelona, España.
authors.forename: A
authors.initials: A
authors.lastname: Nubiola Calonge
authors.forename: L C
authors.initials: LC
authors.lastname: Valladares
authors.forename: N
authors.initials: N
authors.lastname: Jové Vidal
authors.forename: S
authors.initials: S
authors.lastname: Pérez Herms
authors.forename: J M
authors.initials: JM
authors.lastname: Palacín Casal
authors.forename: M
authors.initials: M
authors.lastname: Torres Salinas
mesh_terms: D006177:Gynecomastia / Q000209:etiology*; D006801:Humans; D007984:Leydig Cell Tumor / Q000150:complications*; D008297:Male; D008875:Middle Aged; D013736:Testicular Neoplasms / Q000150:complications*