Sciatic rectal fossa abscess

Acute purulent infection occurs in the anal canal and rectal soft tissue or in the surrounding space, and an abscess is formed, which is called anal canal and rectal abscess. It is characterized by spontaneous ulceration or anal fistula often formed after surgical incision and drainage. It is a common anorectal disease, and it is also the acute phase of the anal canal and rectal inflammation pathological process. Anal fistula is the chronic phase. Common pathogenic bacteria are Escherichia coli, Staphylococcus aureus, Streptococcus and Pseudomonas aeruginosa, occasionally anaerobic bacteria and Mycobacterium tuberculosis, often mixed infections of multiple pathogens. The sciatic rectal fossa is more common, and is mostly caused by anal gland infection spreading outward through the external sphincter to the sciatic rectal space.