Colorectal Surgery Practice Questions

Q: What is the treatment of choice for squamous cell anal cancer?

Chemoradiotherapy. ***Chemoradiotherapy*** - **Chemoradiotherapy** is the standard and most effective treatment for squamous cell anal cancer, offering high rates of **tumor control** and **anal sphincter preservation**. - This combined approach uses both **radiation** and **chemotherapy** (typically 5-fluorouracil and mitomycin-C) to enhance tumor cell killing and reduce recurrence. *Laser ablation* - **Laser ablation** is a minimally invasive technique generally reserved for very small, early-stage **superficial tumors** or **intraepithelial neoplasia**, not for invasive squamous cell anal cancer. - It does not address potential **lymph node involvement** or deliver the comprehensive treatment required for most anal cancers. *Abdominoperineal resection* - **Abdominoperineal resection (APR)** involves the surgical removal of the anus, rectum, and part of the sigmoid colon, leading to a permanent **colostomy**. - This is considered a **salvage therapy** for recurrent disease or for patients who have failed chemoradiotherapy, not a primary treatment. *Cisplatin-based chemotherapy* - While **cisplatin** can be used as a component of chemotherapy regimens for some cancers, it is not the primary single-agent or cornerstone chemotherapy for **squamous cell anal cancer**. - The standard chemotherapy regimen typically includes **5-fluorouracil** and **mitomycin-C** in combination with radiation.

Q: What is the treatment of choice for anal carcinoma?

Chemoradiation. ***Chemoradiation*** - This combined modality is the **standard of care** for most anal carcinomas, achieving high cure rates while preserving sphincter function. - The combination of **chemotherapy** (e.g., 5-fluorouracil and mitomycin C) and **external beam radiation** works synergistically to destroy cancer cells. *Chemotherapy alone* - **Chemotherapy alone** is generally insufficient as a primary treatment for anal carcinoma. - It is often used in combination with radiation or for **metastatic disease**, but not as a monotherapy for curative intent in localized disease. *APR combined with radiotherapy* - **Abdominoperineal resection (APR)** combined with radiotherapy is typically reserved for **recurrent** or **persistent anal carcinoma** after failed chemoradiation, or for very advanced tumors. - APR is a highly morbid surgery leading to a **permanent colostomy**, and primary chemoradiation aims to avoid this outcome. *All of the options* - As **chemoradiation** is the preferred first-line treatment and other options are either inadequate or reserved for specific situations, stating "all of the options" is incorrect. - The treatment strategy for anal carcinoma involves a nuanced approach, prioritizing **organ preservation** with effective cancer control.

Q: What is the most common abdominal surgical procedure for complete rectal prolapse?

Rectopexy. ***Rectopexy*** - **Rectopexy** is the most common abdominal surgical procedure for full-thickness rectal prolapse - It involves fixing the rectum to the sacral promontory or presacral fascia (with sutures or mesh) to prevent prolapse - Various modifications exist including suture rectopexy, mesh rectopexy, ventral rectopexy, and resection rectopexy - **Abdominal approach** is preferred in fit patients with better long-term outcomes compared to perineal procedures *Rectal mucosal stapling* - This procedure refers to **stapled hemorrhoidopexy (PPH)** or **STARR procedure** - Primarily used for **internal mucosal prolapse** and hemorrhoids, not full-thickness external rectal prolapse - Involves excising redundant rectal mucosa using circular staplers - Does not address the full-thickness prolapse or provide proper fixation *Placation/wiring* - **Thiersch wiring** is a historical perineal procedure involving placement of a wire or suture around the anus to narrow the anal canal - Now largely abandoned due to high recurrence rates and complications - **Plication** refers to folding tissue but is not a standalone procedure name for rectal prolapse - This terminology is not standard in modern colorectal surgery *Mucosal resection* - Refers to **Delorme's procedure**, a perineal approach involving mucosal sleeve resection with underlying muscle plication - Used in elderly or high-risk patients who cannot tolerate abdominal surgery - Associated with higher recurrence rates compared to abdominal rectopexy - Does not provide the same level of fixation as abdominal procedures

Q: Ogilvie's syndrome most commonly involves

Cecum and right hemicolon. ***Cecum and right hemicolon*** - Ogilvie's syndrome, also known as acute colonic pseudo-obstruction, primarily affects the **large bowel**. - It most commonly presents with significant dilation of the **cecum and right hemicolon** due to impaired autonomic innervation *Stomach* - The stomach is not typically involved in Ogilvie's syndrome. Conditions affecting the stomach might include **gastroparesis** or **pyloric obstruction**, which have different pathophysiologies. - Ogilvie's syndrome is a disorder of **colonic motility**, not gastric motility. *Gallbladder* - The gallbladder is an organ of the **biliary system** and is not directly affected by Ogilvie's syndrome. - Conditions like **cholecystitis** or **cholelithiasis** involve the gallbladder but are unrelated to acute colonic pseudo-obstruction. *Small intestine* - While pseudo-obstruction can sometimes affect the small intestine (chronic intestinal pseudo-obstruction), Ogilvie's syndrome specifically refers to **acute colonic pseudo-obstruction**. - **Small bowel obstruction** caused by mechanical blockages is a distinct condition with different diagnostic features and management.

Q: What is the treatment of choice for a patient presenting with carcinoma of the rectum and obstruction in an emergency setting?

Hartmann's procedure. ***Hartmann's procedure*** - In an emergency setting with **obstructing carcinoma of the rectum**, Hartmann's procedure is the **treatment of choice**. - This procedure involves **resection of the tumor** with formation of an **end colostomy** and closure of the distal rectal stump. - It achieves **dual objectives**: relieves the obstruction AND removes the primary tumor, allowing proper oncological staging and planning of adjuvant therapy. - While more extensive than simple diversion, it is the **standard emergency operation** for obstructing left-sided and rectal cancers in patients who can tolerate resection. - The colostomy can be reversed later after adjuvant treatment (if needed), though many remain permanent. *Defunctioning colostomy* - A proximal diverting colostomy only diverts the fecal stream without addressing the primary tumor. - This is a **temporizing measure**, not definitive treatment, and leaves the malignancy in situ. - It may be considered in **highly unstable patients** or for purely **palliative** intent when resection is not feasible. - Requires a second major operation for definitive tumor resection, increasing overall morbidity. *Total colectomy* - This involves removing the entire colon and is performed for conditions like **familial adenomatous polyposis** or **synchronous colon cancers**. - Not indicated for isolated rectal cancer with obstruction. - Would be excessively extensive and carry unnecessary morbidity in this setting. *Left hemi-colectomy* - This procedure removes the left colon (descending and sigmoid) but typically does not include the rectum. - Not appropriate for **rectal cancer**, as it would not address the primary pathology. - Used for tumors of the descending or sigmoid colon, not rectum.

Q: What is the treatment of choice for a 70-year-old male patient who presents with peritonitis secondary to ruptured diverticulitis?

Hartmann's procedure. ***Hartmann's procedure*** - For **peritonitis secondary to ruptured diverticulitis** in an elderly patient, a Hartmann's procedure is often the safest choice, involving resection of the diseased bowel and creation of an **end colostomy**. - This procedure avoids a primary anastomosis in the presence of **sepsis** and inflammation, reducing the risk of anastomotic leak in a high-risk patient. *Conservative* - **Conservative management** with antibiotics is typically reserved for **uncomplicated diverticulitis** (i.e., no perforation or generalized peritonitis). - Given the presence of **peritonitis**, a surgical intervention is necessary to address the source of infection and contamination. *Primary resection and anastomosis* - While possible in select, hemodynamically stable patients with localized contamination, **primary anastomosis** carries a higher risk of **anastomotic leak** in the setting of diffuse peritonitis and inflammation. - This approach is generally avoided in elderly patients with significant contamination due to increased morbidity and mortality risks. *Whipple procedure* - The **Whipple procedure**, or pancreaticoduodenectomy, is a complex surgical operation to remove the **head of the pancreas**, duodenum, gallbladder, and part of the bile duct. - It is used to treat **pancreatic cancer** and other tumors of the periampullary region, and is completely unrelated to diverticular disease or peritonitis.

Q: The ideal indication for injection of sclerosing agents is:

Internal hemorrhoids. ***Internal hemorrhoids*** - Sclerotherapy is most effective for **first- and second-degree internal hemorrhoids**, where symptomatic bleeding is the primary concern. - The injected agent causes **fibrosis** and **scarring**, leading to fixation of the hemorrhoidal tissue and reduced blood flow. *External hemorrhoids* - External hemorrhoids are located **below the dentate line** and are covered by sensitive anoderm. - Sclerosing agents can cause **significant pain** and are generally ineffective for external hemorrhoids. *Immediate surgery for strangulated hemorrhoids* - **Strangulated hemorrhoids** are a medical emergency requiring **urgent surgical intervention** to prevent tissue necrosis. - Sclerotherapy is absolutely **contraindicated** in this scenario due to the risk of exacerbating ischemia and complications. *Surgical intervention for prolapsed hemorrhoids* - While sclerotherapy can be used for some early-stage prolapsed internal hemorrhoids (second degree), **surgical intervention** is more appropriate for **third- and fourth-degree prolapsed hemorrhoids**. - These more advanced hemorrhoids often require techniques like **hemorrhoidectomy** or stapling for definitive treatment.

Q: Treatment of choice for 3rd-degree hemorrhoids is:

Hemorrhoidectomy. ***Hemorrhoidectomy*** - For **3rd-degree hemorrhoids**, which prolapse and require manual reduction, **hemorrhoidectomy** is considered the **definitive surgical treatment** with the highest long-term efficacy and lowest recurrence rates. - This procedure completely removes the hemorrhoidal tissue, providing a permanent solution for significant symptoms like bleeding, pain, and prolapse. - It is particularly indicated for **large 3rd-degree hemorrhoids**, patients who have **failed rubber band ligation**, or those desiring **definitive treatment**. *Sclerotherapy* - This method involves injecting a chemical solution to scar and shrink the hemorrhoid, primarily used for **1st and 2nd-degree hemorrhoids**. - It is **not effective** for 3rd-degree hemorrhoids due to the larger size and significant prolapse. *Band ligation* - Involves placing a rubber band around the base of the hemorrhoid to cut off blood supply, causing it to wither and fall off. - This is actually an **appropriate first-line treatment** for 3rd-degree hemorrhoids with **70-80% success rates** and can be performed in an outpatient setting. - However, when asking for the **definitive treatment of choice**, hemorrhoidectomy remains the gold standard due to its superior long-term outcomes and lower recurrence rates. - Multiple sessions may be required, and it has higher failure rates compared to surgical excision. *None of the above* - This option is incorrect because **hemorrhoidectomy** is the definitive treatment of choice for 3rd-degree hemorrhoids. - While band ligation is also appropriate, hemorrhoidectomy provides the most definitive cure.

Q: Emergency management of Ulcerative colitis is by:

Subtotal colectomy with end ileostomy. ***Subtotal colectomy with end ileostomy*** - This is the **standard emergency procedure** for fulminant ulcerative colitis, toxic megacolon, perforation, or massive hemorrhage - Involves removal of the **entire colon** (from ileocecal junction to upper rectum) while **preserving the rectal stump** as a Hartmann's pouch - Creates an **end ileostomy** for fecal diversion - **Proctectomy is avoided** in the emergency setting due to higher morbidity, risk of pelvic sepsis, and technical difficulty in acutely ill patients - The rectal stump can be removed later (2nd stage) with consideration for **ileal pouch-anal anastomosis (IPAA)** after patient stabilization - This staged approach allows for optimization of the patient's condition and future reconstructive options *Total proctocolectomy with end ileostomy* - This involves removal of both the **colon and rectum** with permanent ileostomy - **NOT recommended in emergency settings** as proctectomy adds significant morbidity in critically ill patients - Requires pelvic dissection in inflamed tissues, increasing risk of complications - May be performed electively as a **second-stage procedure** or in patients not candidates for reconstructive surgery *Right hemicolectomy* - Removes only the **right side of the colon** (cecum, ascending colon, and part of transverse colon) - Inappropriate for ulcerative colitis, which is a **pan-colonic disease** that always involves the rectum and extends proximally - Inadequate resection would leave diseased colon in place *Left hemicolectomy* - Removes only the **left side of the colon** (descending colon and part of transverse colon) - Inadequate for ulcerative colitis as it doesn't address the **entire diseased colon** - Would leave inflamed segments and the **always-involved rectum** in place

Q: Type of hemicolectomy done for carcinoma of the appendix?

Right hemicolectomy. ***Right hemicolectomy*** - Carcinoma of the appendix typically requires a **right hemicolectomy** due to the **lymphatic drainage** patterns of the appendix which extend to the right colon mesentery. - This procedure ensures adequate removal of the primary tumor, regional lymph nodes, and a segment of the adjacent colon for oncological clearance. *Extended Right hemicolectomy* - This procedure involves removal of a larger segment of the colon (**right colon plus transverse colon**), which is usually not necessary for standard appendiceal carcinomas unless there's extensive local spread to the transverse colon or multiple metastatic lymph nodes in that region. - It is a more extensive operation with higher morbidity and is typically reserved for lesions involving the **hepatic flexure** or proximal transverse colon. *Left hemicolectomy* - A left hemicolectomy removes the **descending colon** and a portion of the transverse colon, which is surgically distant from the appendix. - This procedure is indicated for tumors of the **descending colon** or **splenic flexure**, and has no role in the treatment of appendiceal carcinoma. *Extended left hemicolectomy* - This operation involves removal of the **descending colon, sigmoid colon, and sometimes the distal transverse colon**, which is far removed from the appendix. - It is performed for carcinomas of the **distal transverse colon, splenic flexure, or descending colon**, and is inappropriate for appendiceal malignancies.

Question 1

What is the treatment of choice for squamous cell anal cancer?

Accepted Answer

Chemoradiotherapy

Answer

Laser ablation

Answer

Abdominoperineal resection

Answer

Cisplatin-based chemotherapy

Question 2

What is the treatment of choice for anal carcinoma?

Accepted Answer

Chemoradiation

Answer

Chemotherapy alone

Answer

APR combined with radiotherapy

Answer

All of the options

Question 3

What is the most common abdominal surgical procedure for complete rectal prolapse?

Accepted Answer

Rectopexy

Answer

Rectal mucosal stapling

Answer

Placation/wiring

Answer

Mucosal resection

Question 4

Ogilvie's syndrome most commonly involves

Accepted Answer

Cecum and right hemicolon

Answer

Stomach

Answer

Gallbladder

Answer

Small intestine

Question 5

What is the treatment of choice for a patient presenting with carcinoma of the rectum and obstruction in an emergency setting?

Accepted Answer

Hartmann's procedure

Answer

Total colectomy

Answer

Defunctioning colostomy

Answer

Left hemi-colectomy

Question 6

What is the treatment of choice for a 70-year-old male patient who presents with peritonitis secondary to ruptured diverticulitis?

Accepted Answer

Hartmann's procedure

Answer

Conservative

Answer

Primary resection and anastomosis

Answer

Whipple procedure

Question 7

The ideal indication for injection of sclerosing agents is:

Accepted Answer

Internal hemorrhoids

Answer

External hemorrhoids

Answer

Immediate surgery for strangulated hemorrhoids

Answer

Surgical intervention for prolapsed hemorrhoids

Question 8

Treatment of choice for 3rd-degree hemorrhoids is:

Accepted Answer

Hemorrhoidectomy

Answer

Sclerotherapy

Answer

Band ligation

Answer

None of the above

Question 9

Emergency management of Ulcerative colitis is by:

Accepted Answer

Subtotal colectomy with end ileostomy

Answer

Right hemicolectomy

Answer

Total proctocolectomy with end ileostomy

Answer

Left hemicolectomy

Question 10

Type of hemicolectomy done for carcinoma of the appendix?

Accepted Answer

Right hemicolectomy

Answer

Extended Right hemicolectomy

Answer

Left hemicolectomy

Answer

Extended left hemicolectomy

Colorectal Surgery — MCQs

Colorectal Surgery — MCQs

On this page

Practice by Chapter

Want unlimited practice?