Nakra, TSharma, ASharma, AKakkar, A.2023-08-102023-08-102022-06Nakra T, Sharma A, Sharma A, Kakkar A. . An unusual testicular mass in a young male: Metastasis from occult gastric carcinoma. Indian Journal of Pathology & Microbiology. 2022 Jun; 65(2): 440-4430377-49290974-5130http://imsear.searo.who.int/handle/123456789/223252Metastases to the testis are uncommon. Signet-ring cell carcinomas from the gastrointestinal tract (GIT) can rarely disseminate to the testicles, mimicking primary testicular malignancies with signet-ring cells. We hereby describe a case of a 26-year-old male who presented with left testicular swelling, multiple lymphadenopathies, and normal serum tumor markers. Lymph node biopsy revealed clusters and singly lying signet-ring cells. Judicious use of immunohistochemistry confirmed the tumor to be GIT primary. Further investigations confirmed a gastric tumor extending to the duodenum. Although rare, metastatic tumors to the testis should be considered in differential diagnoses of testicular masses in a young patient, particularly when serum germ cell tumor markers are normal or mildly deranged.Gastrointestinal tractimmunohistochemistrymetastasissignet-ring cell carcinomatesticular tumorJournal ArticleIndiaDepartment of Pathology, All India Institute of Medical Sciences, New Delhi, IndiaDepartment of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India