HTHSCI 1DT3 Lecture 11: anatomy sur-64-71
26 Dec 2020
School
Department
Course
Professor
Document Summary
Sinus: blind ending tract, lined by epithelial or granulation tissue, which opens onto an epithelial surface. Hair works its way beneath skin foreign body reaction formation of abscess. Occupations c lots of sitting: e. g. truck drivers. Persistent discharge of purulent or clear fluid. Shave / remove hair from affected area. Anal gland blockage infection abscess. Discrete local red swelling close to the anal verge. Abx may suffice if rx instigated v. early in course. Look for an anal fistula which complicates ~30% of abscesses. Relatively uncommon: 250-300 cases/yr in the uk. Above dentate line internal iliac nodes. Hpv (16, 18, 31, 33) is important factor. Tumours that fail to respond to radiotherapy. Small anal margin tumours w/o sphincter involvement. Protrusion of rectal tissue through the anal canal. Usually elderly females c poor o&g hx. May reduce spontaneously or require manual reduction. Assoc. c vaginal prolapse and urinary incontinence. Mobilised rectum fixed to sacrum c mesh.
