Prostate cyst 4mmx3mm is not normal. The prostate is an important gland in adult men, usually located below the pubic bone, under normal circumstances there is no cyst within the prostate tissue, if the examination found prostate cyst 4mmx3mm, it may be a manifestation of the local tissue calcification, fibrosis, commonly found in the prostatitis after healing. If the prostate ultrasound found in the prostate tissue 4mmx3mm cyst tissue, sometimes the patient may not have frequent urination, urinary incontinence and lower abdominal pain and other discomfort symptoms, then you can regularly review and actively observe, once the discomfort symptoms continue to aggravate, and the size of the cyst will gradually increase, it is best to recommend timely surgical resection of the diseased tissue. If the patient is not feeling well, it is necessary to consult the doctor for examination and early treatment.