Diagnostic Imaging and Management of Stercoral Colitis

Imaging Strategies

• When intravenous contrast is contraindicated (e.g., severe renal impairment or contrast allergy), clinicians should employ alternative modalities such as abdominal ultrasound, magnetic resonance imaging, or non‑contrast computed tomography to evaluate for stercoral colitis and its complications. 1
• In patients with suspected stercoral colitis, contrast‑enhanced CT remains the preferred diagnostic tool for confirming fecal impaction, bowel wall thickening, pericolonic fat stranding, and for detecting perforation or ischemia. (Evidence level not specified).

Conservative (Medical) Management

• Initial non‑operative care for hemodynamically stable patients without perforation includes rapid intravenous fluid resuscitation, broad‑spectrum antibiotics covering gram‑negative aerobes and anaerobes, and a multimodal bowel regimen (enemas, osmotic laxatives, and manual disimpaction). [3][4]
• Clinical monitoring should comprise serial abdominal examinations for new peritoneal signs and serial laboratory trends (white‑blood‑cell count and lactate) to assess response within the first 24–48 hours of therapy. [3][4]
• A bowel‑cleansing protocol using osmotic agents (e.g., magnesium oxide 0.5–1.5 g daily or lactulose 15–30 mL daily) is recommended to reduce stool burden while avoiding over‑distension. 4

Surgical Indications and Options

• Immediate operative intervention is mandated for patients with perforation and peritonitis (World Society of Emergency Surgery [WSES] stage 3–4) to achieve source control. [5][6]7
• The presence of free intraperitoneal air without diffuse intra‑abdominal fluid (WSES stage 2b) also warrants surgical exploration because conservative therapy fails in 10–43 % of such cases. [8][7]
• Preferred operative procedures for perforated stercoral colitis in older adults include:
  
  • Hartmann’s procedure or segmental resection with primary anastomosis, both considered acceptable based on patient physiology. [9][5]2
  • Damage‑control surgery (emergency laparotomy, rapid source control, temporary abdominal closure with vacuum‑assisted closure) for physiologically unstable patients. [9][10]2
  • Laparoscopic sigmoidectomy may be performed in stable patients when performed by experienced surgeons. [5][11]

Antibiotic Therapy

• Empiric antimicrobial regimens should target gram‑negative aerobes and anaerobes, taking into account individual comorbidities and local resistance patterns. [9][5]11
• A typical course of 3–5 days is adequate after effective source control, provided the patient shows clinical improvement. [9][5]
• If signs of peritonitis or systemic infection persist beyond 5–7 days, further diagnostic evaluation (e.g., repeat imaging, culture acquisition) is required. [9][5]
• Cultures obtained from percutaneous drains or intra‑operative specimens should be used to de‑escalate antibiotics appropriately. 3

Prognostic Factors

• Advanced age independently predicts higher postoperative mortality: mortality rates are approximately 9.7 % for patients aged 65–79 years and 17.8 % for those older than 80 years. 1

Overall mortality for stercoral colitis is reported at 22.4 %; operative mortality (≈27 %) exceeds non‑operative mortality (≈0 %). (Evidence level not specified).