However, the treatment outcome was not satisfactory, and progression occurred shortly after the operation.When lymph node metastasis occurred, another puncture biopsy sample was sent to the Affiliated Cancer Hospital of Fudan University for pathological consultation, and the sample was confirmed to be a poorly differentiated carcinoma (testicular tumor) consistent with SMARCB1/INI-1 deletion. Here, SMARCB1 is linked to metastatic malignant neoplasm in the lymph nodes.