Abdominal Key

Fig. 13.1 Pathogenesis of pilonidal disease Fig. 13.2 Pathogenesis of lose hair inserting and burrowing under the skin, forming a sinus tract 13.3 Clinical Presentation How does one recognize pilonidal…

Fig. 11.1 Diagnostic algorithm in patients with suspected nonfunctional causes of anal pain Should initial physical exam fail to provide the diagnosis, ancillary tests may be performed. An office test,…

  Density (Hounsfield units) Air −1000 Fat −30 to −100 Simple fluid −10 to 20 Water 0 Blood 30–50 Muscle 45 Cortical bone 200–600 A limitation often encountered with CT…

Fig. 2.1 Ritter proctoscopic table used for examination in the prone jackknife position Fig. 2.2 Prone jackknife position Alternatively, the left lateral recumbent (Sims’) position is also widely used, especially…

Fig. 9.1 This is an image of the patient in the prone position with a foley catheter in place. In this picture you can see the perineal fistula between the…

Primary tumor (T) TX Primary tumor cannot be assessed T0 No evidence of primary tumor Tis Carcinoma in situ T1 Tumor 2 cm or less in greatest dimension T2 Tumor…

Fig. 1.1 Puborectalis forming the anorectal angle Lying posteriorly to the rectum are the sacrum, coccyx, and pelvic diaphragm, along with the associated presacral venous plexus and roots of the…

Idiopathic Fecal soilage Dietary factors Anorectal disease Abnormal anorectal morphology (congenital or postsurgical) Anal fissure Fistula in ano Hypertrophic anal papilla Internal hemorrhoidal disease Perianal Crohn’s disease Rectal prolapse Dermatologic…

Fig. 8.1 Embryology of the anorectum. (a) The cloaca—the fusion of the hindgut with the allantois and mesonephric ducts—is partitioned by the urorectal septum, creating (b) the urogenital sinus anteriorly…

Fig. 10.1 External hemorrhoid and skin tag Mixed hemorrhoids are both internal and external hemorrhoids within the same presentation (Fig. 10.2). Patients will experience symptoms involving both components that can…