<prompt> Most common cause of peritonitis in adult male isDuodenal ulcer perforationAbdominal tuberculosisEnteric perforationPerforated appendix  <response>: MC cause of peritonitis in adult male: Peptic ulcer perforation The most common cause is a perforation of the abdominal viscus-most commonly, a perforated ulcer, may occur as a result of perforation of any pa of the bowel; other causes include a benign ulcer, a tumor, or trauma. MC cause of peritonitis in adult male: Peptic ulcer perforation 