The patient complains about severe pain in the anus region after defecation and mild hemorrhage ( 2-3 drops) after defecation, and also about chronic constipation. He has fear of defecation, because of above mentioned complains. Your previous diagnosis is ?
A. Hemorrhoids
B. Cancer of the rectum
C. Acute paraproctitis
D. Fissura ani
E. Pararectal fistula
Answer: D. Fissura ani