<s>[INST] In my testis bag there are two testis and a circular body. This body is about 3 cm in size. It is soft and when pressed it disappear cusing irritation in my stomach. Wat is it? And why is it? [/INST] hello it is not necessarily cancer. there are many non cancerous tumours in testis.you should do some tests like ultrasound of both testis,urine analysis, blood tests like -cbc,esr. then you will get basic idea. further test or treatment will depend on these reports.bye </s>