There is controversy concerning the implications of impalpable testicular masses. We examine the sonographic findings and pathology of such tumors.Between 1985 and 1994, 3,019 scrotal ultrasound studies were performed for various indications and 15 impalpable masses were discovered.Pathological study revealed 5 seminomas, 6 nonseminomas, 2 "burned-out" tumors, 1 lipoma and 1 granuloma.Impalpable intratesticular masses are likely to be malignant. Any young man with retroperitoneal or visceral masses should undergo scrotal ultrasound. A testicular mass is likely to be the primary cancer but it may be regressed. Persistent scrotal pain may be a presentation of malignancy and should be evaluated with ultrasound.
View details for Web of Science ID A1995RU47200028
View details for PubMedID 7658540