Yes, it is still possible to have an infection in the prostate despite a negative swab.
I would consider a thorough
digitalDigital rectal exam rectalAnorectal fistulas
Colon cancer
Colorectal polyps
Digital rectal exam
Hemorrhoids
Imperforate anus
Imperforate anus repair
Inflatable artificial sphincter
Proctitis
Rectal biopsy
Rectal cancer, x-ray exam to ensure the prostate isn't tender.
Prostatic abscesses can also be difficult to treat and evaluate. Imaging the prostate can be considered - a transrectal ultrasound would be a reasonable test to consider.
This option can be discussed with your personal physician or in conjunction with a urology evaluation.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
Medical Weblog:
kevinmd_b