This inflammation can affect the body's organs and soft tissue.1, 2 A person may not notice
external signs of inflammation, such as redness and swelling, but may notice other symptoms, such as joint
pain.
The
signs of anal sac tumors can be variable:
external swelling in the perianal region, a mass may be felt during a routine rectal examination, constipation,
pain or straining to defecate, blood in the stool, excessive thirst and urination.