患者，男，３７岁。患者因左睾丸无痛性肿大１月收入院。１月前无意中发现左侧睾丸肿大，生长迅速，无疼痛不适，有沉重感，伴有低热，无盗汗，皮肤搔痒，体重减轻，无纳差、乏力。查体：一般情况好。皮肤粘膜无黄染、水肿及皮下出血；全身浅表淋巴结未触及肿大；咽部无充血， Patient, male, 37 years old. Patients with painless swelling of the left testis January hospital income. A month ago, inadvertently found on the left testicular enlargement, rapid growth, no pain and discomfort, a heavy feeling, accompanied by fever, no night sweats, itchy skin, weight loss, no anorexia, fatigue. Physical examination: the general situation is good. No yellow skin and mucous membranes, edema and subcutaneous hemorrhage; systemic superficial lymph nodes did not touch the enlargement; throat without congestion,