Histopathological Features of Paratesticular Solid Tumors: 5 Years Experience

Abstract

Objective: The aim of this study is to determine the types of tumors seen in the paratesticular region, to discuss the most prominent histopathological features and differential diagnoses of rare tumors among our cases as well as to compare the findings with the literatüre. Method: The patients operated in Bezmialem Vakıf University for inguinal hernia and paratesticular tumor between 2014-2019 and diagnosed as paratesticular tumor were added to our study. Diagnosis, clinical findings and demographic data of the cases were recorded. Results: We had a series of 21 paratesticular tumors with a mean age of 58.8 years. The most common; benign tumor was lipoma and malignant tumor was liposarcoma. Hemangioma, ovarian type serous carcinoma and mesothelioma were also rarely seen in the literature. Conclusion: Paratesticular tumors are composed of tumors originating from rete testis, epididymis and tunica vaginalis, soft tissue tumors and metastatic tumors. The most common epithelial tumors are adenomatoid tumors. The most common benign and malignant mesenchymal tumors are lipoma and liposarcoma, respectively. Histomorphological appearance may be difficult especially in malignant epithelial tumors. Although immunohistochemical markers are helpful in differentiation, the transition between the lesion and non-neoplastic epithelium is important. Paratesticular tumors are quite rare. For this reason, at this location both primary tumors-especially malignant-and metastasis can be challenging. They should be kept in mind for differential diagnosis.