Malignant Teratoma and Seminoma in Testicular Fusion Anomaly (Synorchism)
Abstract
This paper presents a rare case of testicular fusion anomaly (synorchism) observed at the Ankara University Medical Faculty Oncology Institute and Hospital, accompanied by two distinct testicular malignancies. A 35-year-old male patient, with a congenital absence of the right testis, developed a progressively enlarging mass in the left testicle and abdominal and supraclavicular regions. Clinical and pathological evaluations revealed a seminoma in the left testis and a malignant teratoma in the right-sided abdominal mass. Histological analysis of the surgically resected tissues confirmed the presence of two separate tumors with different cellular origins. This unique case demonstrates the co-occurrence of a testicular fusion anomaly and two distinct germ cell tumors—an extremely rare presentation in urologic oncology. The case is discussed in the context of the existing literature, with emphasis on the diagnostic challenges, operative findings, histopathologic features, and treatment course.
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References
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