Microplastics were detected in prostate tissue in almost all patients undergoing prostate cancer surgery in a small proof-of-concept study. The study was presented at the American Society for Clinical Oncology Genitourinary Carcinoma Symposium. The researchers analyzed samples of prostate tumors from cancer patients. Microplastics have been found in tissue from patients who have undergone surgery. The study is small and serves as a proof of concept. The findings point to the presence of microplastics in prostatectomy tumor samples.