perianal

perianal

[per′i·ā′nəl]

Etymology: Gk, peri, around; L, anus

pertaining to the area around the anus.

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perianal [per″e-a´nal]

around the anus.

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perianal

around the anus.

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perianal abscess

under the skin outside the anal canal. Causes sufficient pain to inhibit defecation.

perianal fistula

a syndrome of inflammation, ulceration, and draining sinuses and fistulae in the perianal region of dogs, particularly German shepherd dogs. The specific lesions include fistulae of the anal sinuses, anal sac rupture and fistulae, submucous fistulae and sinuses and fistulae of the rectum. Clinical signs include painful defecation and unpleasant odor. A variety of surgical techniques have been developed, but the condition is very resistant to treatment. Called also anal furunculosis.

perianal gland

modified sebaceous glands found in skin around the anus of dogs. Other regions also contain modified glands, e.g. the perineum, prepuce, thigh, dorsal lumbosacral area and tail base. Called also circumanal glands, hepatoid glands.

perianal gland hyperplasia

most perianal gland enlargements in male dogs are hormone-dependent hyperplasia and regress when the patient is castrated.

perianal gland tumors

nodular hyperplasia, adenomas and carcinomas are common in older male dogs, occurring occasionally in females.

perianal pyoderma

see perianal fistula (above).

perianal sinus

see perianal fistula (above).

perianal warts

papilloma around anus, virus possibly transmitted by veterinarian performing rectal examination.