title: Malignant germ cell tumours of undescended testes: imaging features with pathological correlation.
abstract: OBJECTIVE
  To illustrate the imaging features of malignant germ cell tumours complicating undescended testes, emphasizing the importance of recognizing this condition and providing a correct diagnosis to facilitate appropriate management.
  
  
  METHODS
  The clinical presentation, ultrasonography (US) and computed tomography (CT) features of eight consecutive patients with malignant germ cell tumours of undescended testes were reviewed.
  
  
  RESULTS
  CT performed in seven patients showed well-circumscribed soft-tissue masses with inhomogeneous enhancement in all cases. US in four patients showed circumscribed masses with inhomogeneous echogenicity. On pathological examination, there were two cases of embryonal carcinoma and six cases of seminoma. All tumours showed necrosis that correlated to inhomogeneous areas on imaging.
  
  
  CONCLUSIONS
  The radiologist has an important role as he may be the first physician to suggest the diagnosis.
authors.affiliation: Department of Radiology, Chiang Mai University, Chiang Mai, Thailand.
authors.forename: M
authors.initials: M
authors.lastname: Muttarak
authors.forename: W C G
authors.initials: WC
authors.lastname: Peh
authors.forename: B
authors.initials: B
authors.lastname: Chaiwun
mesh_terms: D000328:Adult; D003456:Cryptorchidism / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D003937:Diagnosis, Differential; D018237:Germinoma / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D009919:Orchiectomy / Q000379:methods; D013736:Testicular Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed / Q000379:methods