Reviewed by: A/Prof Declan Murphy, Urologist, Director of Genitourinary Oncology, Peter MacCallum Cancer Centre, VIC; Gregory Bock, Urology Cancer Nurse Coordinator, WA Cancer & Palliative Care Network, WA; A/Prof Martin Borg, Radiation Oncologist, Adelaide Radiotherapy Centre, SA; A/Prof Joseph McKendrick, Medical Oncologist, Eastern Oncology, Eastern Health and Monash University, VIC; Caitriona Nienaber, 13 11 20 Consultant, Cancer Council Western Australia, WA; Ben Peacock, Consumer; and Deb Roffe, Cancer Council Nurse, Cancer Council SA.
This condition, described in What is testicular cancer? , often doesn’t cause a lump in the testicles or any other symptoms . It isn’t clear how often carcinoma in situ (CIS) in the testicles progresses to cancer. In some cases, CIS is found in men who have a testicular biopsy to evaluate infertility or have a testicle removed because of cryptorchidism. Doctors in Europe are more likely than the doctors in this country to look for CIS. This may be why the numbers for diagnosis and progression of CIS to cancer are lower in the United States than in parts of Europe.