Large Intestine Pathology

Question 1

Describe the gross picture of effects bacillary dysentery on colonic mucosa

Answer 1

Hemorrhagic, ulcerated mucosa, with thin grayish white pseudomembrane.

Question 2

Amoeba dysentery is caused by…….

1. Balantidium coli.
2. Entamoeba histological.
3. Trichocephalus Trichurus.
4. Entrobius Vermicularis.
5. Non of the above.

Answer 2

2. Entamoeba histolytica

Question 3

Which of the following is a complication of amoebic dysentery?

1. Amoeboma.
2. Localised annular strictures.
3. Liver amoebiasis.
4. Perianal cutaneous amoebic lesion.
5. Rectal bleeding
6. All of the above

Answer 3

6. All of the above.

Question 4

Describe gross picture of Crohn disease.

Answer 4

1. Aphthus ulcer.
2. Cobblestone appearance.
3. Fissure ulcers.
4. Intestinal wall thickening.
5. Creeping fat

Question 5

What are the clinical picture of crohns disease.

فترات وفترات

Answer 5

1. Intermittent attacks of diarrhea, fever, abdominal pain, weight loss with intervening asymptomatic periods
2. Extra-intestinal manifestations including : uveitis, migratory polyartheritis and analysing spondylitis.

Question 6

Which of the following is a complication of crohns disease?

1. Fistula.
2. Malabsorption.
3. Fibrotic strictures
4. Colonic bleeding
5. All of the above.

Answer 6

5. All of the above

There is also the risk of developing intestinal cancer.

Question 7

Describe the clinical manifestations of ulcerative colitis.

Answer 7

Internittent attacks of BLOODY DIARRHEA, mucus expulsion, lower abdominal pain and cramps.

Question 8

Describe two complications of ulcerative colitis.

Answer 8

1. Severe bleeding.

2. Toxic mega colon.

Question 9

What causes pseudomembranous colitis?

Answer 9

Use of broad spectrum antibiotics favors the overgrowth of exo-toxin producing Clostridium Difficile.

Question 10

The gross picture of acute appendicitis include…

1. Acute catarrhal appendicitis
2. Acute suppurative appendicitis
3. Acute gangerous appendicitis
4. All of the above
5. Non of the above

Answer 10

4. All of the above

Question 11

Describe the microscopic features of acute appendicitis.

Answer 11

1. The lumen is wide and filled with pus elements
2. The mucosa shows ulceration and focal abcesses.
3. Neutrophils infiltrate the wall
4. Hyperplasia of lymphoid nodules
5. The serosa is congested, edematous and may be covered with suppurative exudate

Question 12

Enumerate the complications of acute appendicitis.

Answer 12

1. Perforation
2. Appendicular abscesses
3. Apendicular mass
4. Portal pyaemia
5. Fistula with AAW or urinary bladder

Question 13

Which of the following is a benign tumour of the appendix

1. Carcinoid tumour
2. Mucinous tumour
3. Adenocarcinoma
4. Mucinous cystadenoma
5. 1 and 2

Answer 13

5. 1 and 2

Question 14

Which of the following is a malignant tumour of the appendix

1. Carcinoid tumour
2. Mucinous tumour
3. Adenocarcinoma
4. Mucinous cystadenoma
5. 3 and 4

Answer 14

5. 3 and 4

Question 15

The carcinoid tumour arises from….

1. Panettone cells
2. Enteroendocrine cells
3. Goblet cells
4. Epithelial cells
5. Non of the above

Answer 15

2. Enteroendocrine cells or argentaffine cells

Question 16

Complications of meckel’s diverticulum

PPID

Answer 16

1. Symptoms of peptic ulcers
2. Perforation
3. Intussuseption
4. Diverticulitis

Question 17

What causes congenital megacolon?

Answer 17

Arrest of neural crest migration into rectum creating an aganglionic segment which is permanently contracted, so the colon is dilated as a compensatory mechanism.

Question 18

What are the causes of intestinal obstruction (Acute)

Answer 18

1. Intraluminal
2. Strangulated hernia
3. Volvulus» common in sigmoid colon
4. Intussusception» common in children at ileocaecal valve
5. Paralytic ileus» postoperative
6. Mesenteric vascular occlusion