CT findings and clinical diagnosis of extragonadal seminoma / 实用放射学杂志

ABSTRACT

Objective To investigate the CT imaging findings and diagnostic methods of extragonadal seminoma.Methods The CT imaging findings and the causes of misdiagnosis in 6 cases of extragonadal seminoma before and after CT-guided biopsy were analyzed retrospectively in this study.Results One case of seminoma was found in the right supraclavicular region,mediastinuml,retroperitoneal cavity and retroperitoneal-retroperitoneal cavity,respectively.Two cases located in the pelvic-abdominal cavity.Lesions were substantially isodensity soft tissue masseswith creeping growth,clear boundary,mild to moderate enhancement and peripheral blood vessels embedded in the tumor.All the cases performed CT-guided biopsy.The diagnoses before and after puncture were inconsistent,so the misdiagnosis rate was 100%. Conclusion Extragonadal seminoma occurs randomly in the different location and imaging features are lack of specificity,therefore, it is difficult to diagnose qualitatively.CT-guided biopsy is the most effective clinical method of the diagnosis of extragonadal seminoma.