Welcome to your 6. 🧬 Lower GI Bleeding, Inflammatory Bowel Disease & Colorectal Cancer with Chronic Lower GI Disease Clinical Long Case Arena — 40 MCQs
1.
A 30-year-old man is admitted with acute severe ulcerative colitis. He is passing nine bloody stools daily and has fever, tachycardia and elevated inflammatory markers. Intravenous corticosteroids and supportive treatment are started. By the third hospital day, frequent bleeding and systemic inflammation persist. There is no evidence of perforation. Which is the most appropriate next management decision?
2.
A 57-year-old man with longstanding ulcerative colitis reports a new persistent change in bowel habit, progressive weight loss and worsening iron-deficiency anemia. His previous bowel symptoms had been well controlled. Which clinical concern should take priority during reassessment?
3.
A 44-year-old man with ulcerative colitis experiences improvement after a course of corticosteroids prescribed for a flare. He asks whether he should continue the same corticosteroid treatment indefinitely because it controlled his symptoms effectively. Which management principle is most appropriate?
4.
A 70-year-old woman presents with progressive fatigue and exertional breathlessness. Her hemoglobin is 8.1 g/dL with low mean corpuscular volume. She has no visible rectal bleeding. Colonoscopy reveals an ulcerated mass in the cecum. Which mechanism best explains her presenting hematological abnormality?
5.
A 68-year-old woman is admitted with a significant lower gastrointestinal hemorrhage. CT angiography demonstrates active bleeding from a branch supplying the ascending colon. Despite appropriate resuscitation, bleeding continues. Interventional radiology services are available, and the patient is considered suitable for a minimally invasive intervention. Which treatment is most appropriate?
6.
A 38-year-old woman presents with eight months of intermittent loose stools containing blood and mucus. She reports abdominal cramps, urgency and occasional nocturnal defecation. She has previously been treated for irritable bowel syndrome. Which feature most strongly indicates that her symptoms are due to an organic inflammatory bowel disorder rather than a functional condition?
7.
A 39-year-old man with chronic diarrhea and weight loss is examined for possible inflammatory bowel disease. He has abdominal tenderness and multiple perianal fistulae. Colonoscopy later demonstrates separated areas of inflamed and normal intestinal mucosa. Which pathological process best explains the combination of findings?
8.
A 62-year-old man undergoes sigmoid colectomy for adenocarcinoma. Histopathology demonstrates invasion through the muscularis propria into pericolonic tissue, with clear resection margins and no regional lymph-node metastases. CT imaging shows no distant metastases. Which management approach is most appropriate?
9.
A 42-year-old man presents with recurrent diarrhea, abdominal pain and weight loss. He has recently developed painful swelling around the anus, followed by intermittent purulent discharge. Examination reveals an external perianal fistula opening. Which diagnosis is most strongly supported by this additional history?
10.
A 24-year-old man has active Crohn's disease confined predominantly to the terminal ileum and cecum. He experiences moderate abdominal pain and diarrhea without obstruction, fistula, abscess or systemic toxicity. The gastroenterologist selects controlled-release budesonide rather than conventional systemic prednisolone. What is the principal therapeutic advantage?
11.
A 27-year-old woman presents with chronic bloody diarrhea, urgency and abdominal discomfort. Colonoscopy shows erythematous, friable colonic mucosa with superficial ulceration. Histology demonstrates crypt architectural distortion and crypt abscesses. Stool microbiological tests are negative. Which pathological process best explains her bleeding and urgency?
12.
A 61-year-old man presents with altered bowel habits, rectal bleeding and progressive weight loss. Colonoscopy identifies an irregular ulcerated mass in the sigmoid colon. Biopsy confirms adenocarcinoma. Which investigation is most appropriate for evaluating the extent of disease and planning treatment?
13.
A 33-year-old woman with Crohn's disease has required repeated courses of systemic corticosteroids. Her gastroenterologist plans azathioprine as part of a maintenance strategy. Before starting treatment, baseline investigations and appropriate pretreatment assessment are arranged. Which laboratory monitoring is particularly important during therapy?
14.
A 44-year-old man with longstanding ileal Crohn's disease presents with recurrent colicky abdominal pain and postprandial distension. CT enterography demonstrates a short, fixed intestinal narrowing with proximal dilatation and little evidence of active inflammation. He has previously received appropriate anti-inflammatory treatment. Which management principle is most appropriate?
15.
A 35-year-old man with active Crohn's disease reports increasing colicky abdominal pain, abdominal distension and recurrent vomiting. He has passed minimal stool and flatus over the preceding day. Examination reveals abdominal distension and high-pitched bowel sounds. Which complication is most likely responsible for his deterioration?
16.
A 42-year-old woman hospitalized with active ulcerative colitis develops sudden worsening abdominal pain, marked distension, fever and tachycardia. Examination reveals a tender, distended abdomen. Abdominal radiography demonstrates significant colonic dilatation. Which complication should be suspected, and what is the appropriate clinical response?
17.
A 39-year-old patient with established ulcerative colitis is admitted with worsening bloody diarrhea. She passes ten bloody stools daily, has a pulse of 116/min, temperature of 38.2°C and hemoglobin of 9.5 g/dL. Abdominal examination reveals tenderness but no rigidity. Which management approach is most appropriate?
18.
A 72-year-old man taking apixaban for atrial fibrillation presents with repeated episodes of painless hematochezia. After initial resuscitation, his blood pressure is 108/70 mmHg, pulse is 104/min, and fresh rectal bleeding continues. Hemoglobin has fallen from 11.2 to 8.4 g/dL. The surgical team wants to localize active bleeding before deciding on definitive intervention. Which investigation is most appropriate?
19.
A 38-year-old woman is diagnosed with mild-to-moderate left-sided ulcerative colitis following colonoscopy and histological confirmation. She remains hemodynamically stable, with no signs of severe systemic illness or complications. Which initial treatment strategy is most appropriate to induce remission?
20.
A 32-year-old woman is hospitalized with a severe flare of ulcerative colitis. She has bloody diarrhea, markedly raised inflammatory markers and reduced mobility. There is no uncontrolled major hemorrhage or other contraindication to anticoagulation. The admitting doctor is considering pharmacological venous thromboembolism prophylaxis. Which explanation best supports its use?
21.
A 48-year-old woman with ulcerative colitis involving the colon for approximately 12 years has achieved clinical remission with maintenance treatment. She has no current rectal bleeding or abdominal symptoms. She asks whether further colonoscopy is necessary now that she feels well. Which recommendation is most appropriate?
22.
A 54-year-old man is diagnosed with rectal adenocarcinoma located 6 cm from the anal verge. Pelvic MRI shows extension beyond the muscular wall and suspicious mesorectal lymph nodes. CT imaging reveals no distant metastases. Why is pelvic MRI particularly important when planning his treatment?
23.
A 65-year-old patient undergoes colonoscopy for rectal bleeding and altered bowel habits. Biopsy of a sigmoid lesion confirms adenocarcinoma. Staging investigations demonstrate localized disease without distant metastases. The patient is medically fit for surgery. Which management strategy is most appropriate?
24.
A 46-year-old woman with an established diagnosis of ulcerative colitis presents with increasing bloody diarrhea over five days. She reports passing seven bloody stools daily, increasing fatigue and abdominal discomfort. Before attributing the deterioration entirely to inflammatory disease activity, which additional history is particularly important?
25.
A 64-year-old man with sigmoid adenocarcinoma has two liver metastases detected during staging. Detailed assessment suggests that both hepatic lesions may be completely resectable, and there is no other distant disease. He has good functional status. Which management principle is most appropriate?
26.
A 56-year-old man reports intermittent painless fresh rectal bleeding for six months. Examination identifies internal hemorrhoids. However, he also describes progressive constipation, reduced appetite and unintentional weight loss. His hemoglobin is 9.3 g/dL with microcytosis. Which interpretation is most appropriate?
27.
A 33-year-old man presents with recurrent abdominal pain, chronic diarrhea and weight loss. Colonoscopy demonstrates patchy inflammation with normal intervening mucosa, and imaging reveals a short segment of ileal narrowing. He has a history of perianal abscesses. Which interpretation is most appropriate?
28.
A 58-year-old woman undergoes curative resection of a colon adenocarcinoma. Histopathology reveals metastases in four regional lymph nodes, while distant staging investigations remain negative. She has recovered adequately from surgery and is fit for systemic treatment. Which postoperative treatment strategy offers an important reduction in recurrence risk?
29.
A 41-year-old woman with ulcerative colitis has experienced three inflammatory relapses during the past year. Each responds to oral corticosteroids, but symptoms recur whenever prednisolone is withdrawn despite optimized mesalazine treatment. She is currently stable without severe bleeding or systemic toxicity. Which management principle is most appropriate?
30.
A 36-year-old woman undergoes colonoscopy for chronic bloody diarrhea. The endoscopist observes diffuse friability and superficial ulceration extending continuously from the rectum into the descending colon. Multiple biopsies are obtained. Which histological finding would most strongly support a diagnosis of chronic ulcerative colitis?
31.
A 35-year-old man with newly diagnosed ulcerative colitis has inflammation extending from the rectum to the splenic flexure. He passes four bloody stools daily but is afebrile and hemodynamically stable. He has not received previous treatment. Which therapeutic approach offers the most appropriate initial control?
32.
A 38-year-old woman with eight months of bloody diarrhea undergoes laboratory evaluation. Hemoglobin is 10.2 g/dL, MCV 76 fL and inflammatory markers are elevated. She reports fatigue and reduced exercise tolerance. Which further investigation would most appropriately evaluate the likely cause of her anemia?
33.
A 35-year-old man with Crohn's disease undergoes ileocecal resection for recurrent obstruction caused by a fibrotic stricture. His postoperative recovery is satisfactory. He asks whether removal of the diseased segment means he no longer requires gastroenterology follow-up. Which clinical explanation is most appropriate?
34.
A 29-year-old man with Crohn's disease develops fever, localized right iliac fossa pain and increasing inflammatory markers. CT imaging demonstrates a 5-cm intra-abdominal collection adjacent to an inflamed ileal segment. The patient was previously being considered for biological treatment. Which management approach is most appropriate at this stage?
35.
A 39-year-old patient with severe ulcerative colitis develops increasing abdominal distension, fever and generalized tenderness during hospitalization. Abdominal imaging demonstrates marked colonic dilatation. Despite intensive medical treatment, the patient develops guarding, worsening tachycardia and free intraperitoneal air. Which management is most appropriate?
36.
A 35-year-old patient with chronic bloody diarrhea undergoes clinical examination. She is mildly pale, afebrile and hemodynamically stable. There is mild tenderness in the left lower abdomen without guarding, rigidity or abdominal distension. Which interpretation best explains the current examination findings?
37.
A 38-year-old woman presents with recurrent bloody diarrhea, urgency, tenesmus and weight loss. Investigations reveal microcytic anemia and elevated inflammatory markers. Colonoscopy demonstrates continuous inflammation extending from the rectum to the splenic flexure, with biopsies showing chronic active colitis. Which diagnosis best integrates these findings?
38.
A 37-year-old woman with Crohn's disease has recurrent perianal fistula drainage and persistent intestinal inflammation despite conventional treatment. Pelvic imaging excludes a significant undrained abscess. The multidisciplinary team considers anti-TNF biological therapy. Which additional safety assessment is particularly important before initiating treatment?
39.
A 40-year-old woman undergoing evaluation for chronic bloody diarrhea reports intermittent knee pain. On further assessment, she describes a recent episode of painful red eye associated with photophobia and blurred vision. Which clinical action is most appropriate?
40.
A 41-year-old woman presents with persistent diarrhea and abdominal discomfort. Stool cultures are negative, but fecal calprotectin is markedly elevated. She asks whether this result alone confirms ulcerative colitis. Which interpretation is most appropriate?
