This document discusses the clinical features and investigation of testicular tumors. It covers topics such as: - Common symptoms of primary tumors include painless testicular lumps and sensation of heaviness. Secondary symptoms from metastasis can include abdominal/back pain, dyspnea, and bone pain. - Examination involves inspecting the testicles for size, shape, consistency and assessing for lymph node involvement. - Investigations include blood tests to measure tumor markers like AFP, HCG, LDH. Imaging tests like scrotal ultrasound, chest X-ray, abdominal CT scan are also used to detect primary tumors and metastasis. - Frozen section biopsy during surgery can quickly confirm diagnosis. Role of tumor