Benign Colorectal Conditions Clinical Presentation Clinical Presentation
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Diverticular disease - definitions Diverticulosis - presence of Benign Colorectal diverticula Conditions Diverticulitis - presence of inflammation and infection Nishit S. Shah, MD Diverticular disease - full spectrum VCU School of Medicine of disease 1 2 Diverticulosis – Diverticulosis – radiological endoscopic appearance appearance 3 4 Clinical presentation Clinical presentation Diverticulosis – incidental finding; ? IBS Diverticulitis – related to spectrum of disease Diverticulitis – related to spectrum of –history disease – LLQ pain ( 93 - 100%); ? RLQ pain if sigmoid – abdominal tenderness – localized vs. diffuse redundant – fever ( 57 - 100%) – high temp if peritonitis/abscess – fever – more common with complicated disease – nausea / vomiting – not common – abdominal mass – LLQ; up to 1/3 of patients – change in bowel habit – ? systemic signs – sepsis, circulatory – urinary sx - ? inflammation near bladder; ? fistula dysfunction – previous attacks – rectal bleeding not common; not massive 5 6 1 Investigations Investigations - radiology Routine laboratory tests –CBC - WBC (69-83%) CT scan – diagnostic modality of –UA choice Radiological studies – CT findings –plain AXR • pericolic fat streaking (88%) • ? Ileus, ? dilated colon, ? free air • diverticula (73%) If diagnosis is clear no further tests are needed • wall thickening in uncomplicated disease • abscess/phlegmon – BUT 34-67 % misdiagnosis rate 7 8 Investigations - radiology Classification Uncomplicated – symptomatic uncomplicated 85% – recurrent symptomatic Complicated – 15% – hemorrhage – uncommon in diverticulitis – stricture Æ LBO –fistula – SBO – post-inflammatory adhesions – perforation – abscess, peritonitis 9 10 Uncomplicated diverticulitis - Acute diverticulitis – medical management indications for operation Treatment – bowel rest + antibiotics 2 episodes of uncomplicated – outpatient if – diverticulitis requiring hospitalization • mild disease – no systemic 1 episode of uncomplicated symptoms/signs diverticulitis in immunocompromised • able to tolerate limited diet patient • if not immunosuppressed – steroids, ? diabetes – including diabetes, AIDS, renal failure – inpatient if – 1 episode of complicated • significant pain diverticulitis • localized peritoneal signs 11 12 2 Management of complicated CT Scan diverticulitis Fistula – 12% of pts Colovesical most common – 65% – 2/3 have urinary sx – most commonly pneumaturia – dx – CT, BE, cystoscopy, urine culture – tx – colon resection + 1° anastomosis • enbloc resection if ? malignant etiology Colovaginal – 2nd most common – virtually never occurs with uterus in situ Also – colocutaneous, coloenteric, coloureteric 13 14 CT Scan CT Scan 15 16 Contrast CT Scan - air in bladder Enema SigmoidSigmoid Colon Colon Vagina Vagina 17 18 3 Lower GI Bleeding Lower GI Bleeding Upper vs Lower – distal to ligament of Treitz – diverticulosis – not –itis – usually proximal – angiodysplasia – usually on right – cancer, IBD, ischemic, radiation Diverticulosis 19 20 Lower GI Bleeding Lower GI Bleeding Resuscitate – isotonic fluids/blood – type and cross, r/o coagulopathy R/O upper GI source – NG, EGD R/O anorectal source – ano- proctoscopy Angiodysplasia 21 22 Lower GI Bleeding Pseudomembranous colitis Diagnosis – colonoscopy Caused by gram +ve anaerobe – bleeding scan (0.1 cc/min) – C. difficile – angiography (0.5 cc/min) Prior Abx use; esp in 75 % stop spontaneously immunosuppressed Surgery - if massive (> 6U PRBCs/24 h), Tetrad – fever, watery diarrhea, if unable to stop through c-scope, angio. abdominal pain, WBC – try to localize in order to perform “guided” resection – if unable to localize Æ subtotal colectomy 23 24 4 Pseudomembranous colitis Pseudomembranous colitis Toxins A and B – B detected in ELISA Tx – stop Abx, PO (or IV) MNZ, PO Dx – stool culture for type B cytotoxin; vancomycin (only works enterally) flex sigmoidoscopy Æ yellow plaques 3-20% develop toxic state – 65% of Differ dx – IBD ( more chronic hx ), these will require surgery ischemic colitis (bloody diarr) 25 26 Ulcerative colitis Ulcerative colitis Diffuse inflammatory disease limited Always has rectal disease to (sub)mucosa of colon and rectum “Backwash ileitis” in 10% etiology unknown Signs - non-specific in non-fulminant Sxs – diarrhea, abdom pain – not disease. If toxic – abdominal severe, rectal bleeding distension. If perforation – peritonitis 10 % may be toxic/fulminant 27 28 Ulcerative colitis - diagnosis Ulcerative colitis - diagnosis BE – in acute phase – edema, ulceration, ? thumb-print – in chronic phase – fibrosis, loss of haustra, pattern, shortening especially of L side, strictures Endoscopy – loss of normal vascular pattern; contact bleeding; granularity; superficial ulcers,pseudopolyps – presence of disease from the dentate line cephalad in continuity with proximal involvement 29 30 5 Ulcerative colitis - diagnosis Ulcerative colitis Relationship to carcinoma – risk with pancolonic disease, age of onset, duration (> 10y), active disease/severity – incidence of CRC in UC - 2 - 5% – most common site - rectum 31 32 Ulcerative colitis - treatment Ulcerative colitis Indications for surgery Medical treatment – fulminant (toxic) UC – routes of delivery: topical; oral; intravenous – toxic megacolon – medications – frank perforation – usually with toxic • 5-ASA compounds dilatation • corticosteroids – refractory to medical tx – most common • immune-modulating agents - – extracolonic manifestations – PG, EN, LFT Azathioprine and 6-MP; Cyclosporine abnorm., joint/eye abnorm – malignant degeneration – development of dysplasia 33 34 Ulcerative colitis 35 36 6 37 38 Crohn’s disease Crohn’s disease - diagnosis Chronic, relapsing, transmural, History and Physical segmental, granulomatous disease UGI – strictures, dilated areas, that can affect any portion of GI tract thickened bowel Etiology unknown BE – thickened bowel, ulcers, Sxs–diarrhea (non-bloody), abdom longitud fissures pain, fever, malaise, malnutrition, anorectal Most common site ileocolic 39 40 Crohn’s disease - diagnosis 41 42 7 Crohn’s disease - diagnosis Crohn’s disease - diagnosis Endoscopy – normal rectum in 40-50%, aphthous ulcers, fissures, cobblestoning, patchy Operative – thickened mesentery, creeping fat, serositis, thickened bowel 43 44 Crohn’s disease - diagnosis Crohn’s disease - diagnosis 45 46 Crohn’s disease - complications Crohn’s disease - treatment Medical treatment Obstruction – routes of delivery: topical; oral; intravenous Perforation Æabscess, Æ fistulas – medications Carcinoma – less common vs UC • 5-ASA compounds Toxic megacolon – in Crohn’s colitis • corticosteroids • antibiotics – MNZ, ciprofloxacin • immune-modulating agents - Azathioprine and 6-MP; Cyclosporine; infliximab (anti-TNF-α) 47 48 8 Crohn’s disease - treatment Anorectal disorders Indications for surgery – in 70-75 % Hemorrhoids of pts – anatomy – stricture , chronic obstruction, • 3 sinusoid cushions, not veins. LL, RAL, – abscess or fistula, RPL. Functions – cushion, lining – bleeding – etiology – extracolonic complications - PG, PAN, • constipation; pregnancy; ↑ IS dysfunc; uveitis aging. Not portal HTN – disease intractability – most common – classification – emergency indications • external (distal to dentate line); internal – remember – SURGERY NOT CURATIVE (proximal to dentate line) , graded 1-4 (cf UC) 49 50 Hemorrhoids Anorectal disorders Hemorrhoids – symptoms • pain, mucus discharge, bleeding –exam • rectal, anoscopy. if 40+ y consider full colon evaluation – treatment • non-operative –diet (↑ fibre), soaking •operative – banding, sclerotx, hemorrhoidectomy 51 52 Anorectal disorders Anal fissure Fissure – tear Æ pain, rectal bleeding – usually in midline – esp postr midline – if lateral - ? AIDS, Crohn’s, lymphoma, STD Treatment – non-operative : high-fiber, soaks, stool softeners • NTG ointment – relaxes sphincter spasm – operative – lateral sphincterotomy, fissurectomy 53 54 9 Anorectal disorders Perirectal abscess Perirectal abscess – usually cryptoglandular – also Crohn’s, actinomycosis, TB Classification – perianal, ischiorectal, intersphincteric, supralevator Pain, swelling, drainage Treatment – I/D 55 56 Fistula-in-ano Anorectal disorders Fistula-in-ano – usually sepsis arising at the dentate line Classification – inter- (70%), trans-, supra-, extra- sphincteric – Goodsall’s law Treatment – define anatomy – based on relation to sphincters 57 58 Anorectal disorders Hidradenitis suppuritiva Hidraadenitis suppuritiva – chronic recurring inflammatory condition of apocrine glands and adjacent skin / con. tissue Presents – nodule Æ abscessÆ sinuses Treatment – perianal hygiene, I/D, WLE 59 60 10 Anorectal disorders Anorectal disorders Pilonidal disease Rectal prolapse – obstructed hair • ? etiology follicle in sacrococcygeal area –deep cul-de-sac, weak pelvic floor, Abscess Æ Sinus redundant sigmoid, patulous anal sphincter Treatment – I/D, marsupialization, – associated with incontinence / constipation WLE – treatment – perineal; abdominal 61 62 Rectal prolapse Rectal prolapse Hemorrhoids 63 64 11.