Germ cell neoplasia in situ (GCNIS)

Germ cell neoplasia in situ (GCNIS) is a condition where germ cells, which are the cells that develop into sperm in males and eggs in females, show abnormal growth but have not yet turned into cancer. It's often found in the testicles and is considered a precursor to testicular cancer. While GCNIS itself is not cancer, it can progress to invasive cancer if untreated. Early detection and monitoring are important, and treatment options may include surveillance or surgery to prevent cancer development. It highlights the importance of addressing cellular changes before they become more serious.