Surgical Staging — MCQs
Which classification system is currently used in North America for Wilms' tumor based on surgical and pathological findings?
N3a TNM staging of head and neck tumors (AJCC 8th edition) shows:
A patient presents with bilateral ovarian carcinoma, capsule involvement, ascites, and paraaortic lymphadenopathy. What is the appropriate stage of the disease?
Which stage of surgical anesthesia is optimal for surgery?
A 35-year-old HIV-positive woman (CD4 count 180/μL, on HAART) develops extensive perianal condyloma acuminata resistant to conventional treatments. HPV typing shows type 16. What is the most appropriate management approach?
Surgical staging is done for all the genital malignancies EXCEPT:
A lady undergoes radical hysterectomy for suspected stage Ib cancer cervix. Histopathology reveals cancer extension to the lower part of the uterine body with positive surgical margins. What is the next step of management?
The best cure rates for keloids are achieved by:
Surgical gloves are disposed in which BMW category ?
Which one of the following statements is correct about mesenteric cysts?
Surgical Staging Indian Medical PG Practice Questions and MCQs
Question 1: Which classification system is currently used in North America for Wilms' tumor based on surgical and pathological findings?
- A. COG (Children's Oncology Group) classification (Correct Answer)
- B. SIOP (International Society of Pediatric Oncology Classification)
- C. UICC (Union for International Cancer Control Classification)
- D. NWTS V (National Wilms Tumor Study V)
Explanation: ***COG (Children's Oncology Group) classification*** - The **Children's Oncology Group (COG) classification system** is the primary system used in **North America** for staging Wilms' tumor. - This system relies on **surgical and pathological findings post-nephrectomy** to determine the stage, which then guides subsequent treatment [1]. - COG typically involves **upfront nephrectomy** followed by staging based on operative and histopathological findings, making it the correct answer to this question's specific criteria [1]. *SIOP (International Society of Pediatric Oncology Classification)* - The **SIOP staging system** is predominantly used in **Europe** and other parts of the world. - A key difference is that **SIOP advocates for preoperative chemotherapy** followed by surgery, unlike the COG approach which typically involves immediate surgery. - Because SIOP stages after chemotherapy rather than based on initial surgical findings, it doesn't fit the question's criteria as well as COG. *UICC (Union for International Cancer Control Classification)* - The **UICC classification** is a widely recognized general cancer staging system (TNM system) but is **not specifically tailored** or the primary system used for Wilms' tumor in North America. - While it includes pediatric cancers, specialized systems like COG or SIOP are preferred for their detailed, disease-specific staging of Wilms' tumor. *NWTS V (National Wilms Tumor Study V)* - The **National Wilms Tumor Study (NWTS)** was a series of pivotal clinical trials that significantly advanced the understanding and treatment of Wilms' tumor. - While **NWTS V** was the fifth iteration of these studies and contributed to the current COG staging system, it represented a **clinical trial protocol** and not a standalone classification system for ongoing clinical practice. - The legacy of NWTS lives on through the COG system, which evolved from these important studies. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Diseases of Infancy and Childhood, pp. 488-490.
Question 2: N3a TNM staging of head and neck tumors (AJCC 8th edition) shows:
- A. Metastasis in a lymph node >6 cm (Correct Answer)
- B. Metastasis in lymph nodes >2 cm
- C. Metastasis in lymph nodes >5 cm
- D. None of the options
Explanation: ***Metastasis in a lymph node >6 cm*** - **N3a disease** in head and neck cancer staging (AJCC 8th edition) specifically refers to metastasis in a single lymph node larger than 6 cm in greatest dimension **without extranodal extension (ENE)**. - This applies to oral cavity, oropharynx (HPV-negative), hypopharynx, and larynx cancers. - **Note:** N3 staging also includes **N3b** (metastasis in any node with clinically overt ENE), but this question specifically asks about N3a criteria. *Metastasis in lymph nodes >2 cm* - Lymph nodes in the 2-3 cm range typically fall within **N1 or N2a categories**, depending on laterality and number of involved nodes. - **N3a disease** requires a single lymph node to exceed 6 cm in greatest dimension without ENE. *Metastasis in lymph nodes >5 cm* - A lymph node between 3-6 cm is usually classified as **N2 disease** (N2a if single ipsilateral ≤6 cm, N2b if multiple ipsilateral ≤6 cm, N2c if bilateral or contralateral ≤6 cm). - To be classified as **N3a**, the lymph node must be **>6 cm** without extranodal extension. *None of the options* - This option is incorrect because the first option accurately describes the size criterion for **N3a TNM staging** in head and neck tumors according to AJCC 8th edition guidelines. - While N3 staging has two subcategories (N3a and N3b), the size criterion of >6 cm correctly defines N3a disease.
Question 3: A patient presents with bilateral ovarian carcinoma, capsule involvement, ascites, and paraaortic lymphadenopathy. What is the appropriate stage of the disease?
- A. Stage 1C
- B. Stage 3C (Correct Answer)
- C. Stage 2C
- D. Stage 4C
Explanation: ***Stage 3C*** - **Bilateral ovarian carcinoma** with **capsule involvement**, **ascites**, and especially **paraaortic lymph node metastases** are defining features of Stage IIIC ovarian cancer. - Involvement of **retroperitoneal lymph nodes**, including paraaortic nodes, automatically upstages the disease to Stage III, irrespective of other abdominal spread. *Stage 1C* - This stage refers to ovarian cancer confined to **one or both ovaries**, with evidence of rupture, capsule involvement, or malignant cells in ascites/peritoneal washings, but **without lymph node involvement**. - The presence of **paraaortic lymphadenopathy** in this patient immediately excludes Stage 1C. *Stage 2C* - Stage 2 ovarian cancer involves one or both ovaries with **pelvic extension** beyond the ovaries, but still **without lymph node involvement**. - The patient's involvement of **paraaortic lymph nodes** goes beyond pelvic extension and therefore excludes Stage 2C. *Stage 4C* - Stage 4 ovarian carcinoma involves **distant metastasis** beyond the peritoneal cavity or distant lymph nodes (e.g., pleural effusion with positive cytology, parenchymal liver/spleen metastasis). - While paraaortic lymphadenopathy indicates advanced disease, it falls within the criteria for Stage 3 due to its location, not Stage 4.
Question 4: Which stage of surgical anesthesia is optimal for surgery?
- A. Stage I
- B. Stage II
- C. Stage III (Correct Answer)
- D. Stage IV
Explanation: ***Stage III*** - This stage, also known as **surgical anesthesia**, is characterized by stable vital signs, loss of consciousness, and adequate muscle relaxation, making it ideal for performing surgical procedures. - During this stage, the patient's reflexes are suppressed, and pain perception is abolished, ensuring a smooth and pain-free surgical experience. *Stage I* - This is the **analgesia stage**, where the patient is conscious but drowsy and may experience some pain relief. Incisions are typically not made during this stage. - Reflexes are still present, and the patient may be able to communicate, meaning surgical pain would still be experienced. *Stage II* - Often referred to as the **delirium stage** or **excitement stage**, this phase is characterized by involuntary movements, struggling, and potentially vomiting. - It is an undesirable stage for surgery due to the risk of injury to the patient and staff, and the instability of vital signs. *Stage IV* - This stage, known as **medullary depression**, represents an overdose of anesthetic agents, leading to severe depression of respiratory and cardiovascular centers. - It is a life-threatening stage characterized by complete respiratory arrest, cardiovascular collapse, and potential death, requiring immediate intervention.
Question 5: A 35-year-old HIV-positive woman (CD4 count 180/μL, on HAART) develops extensive perianal condyloma acuminata resistant to conventional treatments. HPV typing shows type 16. What is the most appropriate management approach?
- A. HPV vaccination
- B. Interferon therapy
- C. Continue conservative management with topical imiquimod
- D. Wide surgical excision with histopathological examination (Correct Answer)
Explanation: ***Wide surgical excision with histopathological examination*** - This is the most appropriate management due to the **extensive, treatment-resistant perianal condyloma acuminata** in an **HIV-positive patient with HPV type 16**, which carries a higher risk of **malignant transformation**. - **Surgical excision** allows for complete removal of the lesions and provides tissue for **histopathological examination** to rule out **dysplasia or squamous cell carcinoma**. *HPV vaccination* - While important for prevention, **HPV vaccination** is generally less effective as a primary treatment for **established, extensive lesions**, especially with existing infection. - It primarily aims to prevent new infections and may have some benefit in preventing recurrence, but it won't resolve the current burden of disease. *Interferon therapy* - **Interferon therapy** can be used for severe, recurrent, or difficult-to-treat warts, but its efficacy is variable and generally considered a **second-line or adjunctive treatment**. - Given the patient's **immunosuppressed status** and **resistance to conventional treatments**, a more definitive approach is needed. *Continue conservative management with topical imiquimod* - The patient has already demonstrated **resistance to conventional treatments**, suggesting that continued topical therapy with **imiquimod** is unlikely to be effective. - In an HIV-positive individual with **extensive lesions and high-risk HPV type 16**, waiting for a response to conservative therapy could delay definitive management and potentially increase the **risk of malignant progression**.
Question 6: Surgical staging is done for all the genital malignancies EXCEPT:
- A. Gestational trophoblastic neoplasia (Correct Answer)
- B. Fallopian tube malignancy
- C. Endometrial carcinoma
- D. Ovarian malignancy
Explanation: ***Gestational trophoblastic neoplasia*** - Gestational trophoblastic neoplasia (GTN) is primarily staged **clinically** and **biochemically** using beta-human chorionic gonadotropin (β-hCG) levels. - **Surgical staging is not typically performed** for GTN due to its high sensitivity to chemotherapy and its hematogenous spread pattern. *Fallopian tube malignancy* - **Surgical staging is essential** for fallopian tube malignancy to determine disease extent and guide treatment. - Staging often involves **laparotomy**, histological examination, and evaluation of surrounding tissues. *Endometrial carcinoma* - **Surgical staging is the cornerstone of management** for endometrial carcinoma, as it provides crucial prognostic information. - This typically includes **hysterectomy**, bilateral salpingo-oophorectomy, and lymph node dissection. *Ovarian malignancy* - **Comprehensive surgical staging** is standard for ovarian malignancy to assess the spread of the disease within the peritoneal cavity. - This involves **laparotomy**, biopsies, and often extensive debulking procedures.
Question 7: A lady undergoes radical hysterectomy for suspected stage Ib cancer cervix. Histopathology reveals cancer extension to the lower part of the uterine body with positive surgical margins. What is the next step of management?
- A. Chemoradiation (Correct Answer)
- B. Chemotherapy
- C. Radiotherapy
- D. Follow-up
Explanation: ***Correct Option: Chemoradiation*** - **Positive surgical margins** after radical hysterectomy represent a **high-risk feature** requiring adjuvant concurrent chemoradiation. - According to **GOG 109 trial** and **NCCN/ESGO guidelines**, high-risk features (positive surgical margins, parametrial involvement, or positive pelvic lymph nodes) mandate **concurrent chemoradiation** (external beam radiotherapy + cisplatin-based chemotherapy). - **Cisplatin-based chemoradiation** improves local control and overall survival compared to radiotherapy alone in high-risk post-operative cervical cancer. - The combination provides both local control (radiation) and systemic treatment (chemotherapy) to address micrometastatic disease. *Incorrect Option: Radiotherapy* - Radiotherapy alone is used for **intermediate-risk features** (large tumor size >4 cm, deep stromal invasion, lymphovascular space invasion) without positive margins or nodal involvement. - In this case with **positive surgical margins**, radiotherapy alone is insufficient and would miss the survival benefit provided by concurrent chemotherapy. - The presence of positive margins elevates this to high-risk category requiring combined modality treatment. *Incorrect Option: Chemotherapy* - Chemotherapy alone (without radiation) is not standard adjuvant treatment after radical hysterectomy. - Systemic chemotherapy as a single modality is reserved for recurrent or metastatic disease. - The standard in high-risk post-operative cases is **concurrent** chemoradiation, not sequential therapy. *Incorrect Option: Follow-up* - Follow-up alone is contraindicated with **positive surgical margins**, which indicate residual microscopic disease. - Without adjuvant treatment, the risk of local recurrence and distant metastasis is unacceptably high. - Active intervention with chemoradiation is essential to improve disease-free and overall survival.
Question 8: The best cure rates for keloids are achieved by:
- A. Intralesional excision followed by radiotherapy (Correct Answer)
- B. Intralesional injection of triamcinolone
- C. Surgical excision
- D. Localised irradiation
Explanation: ***Intralesional excision followed by radiotherapy*** - This combined approach offers the **highest cure rates** for keloids by removing the bulk of the lesion and then inhibiting fibroblast proliferation and collagen synthesis using radiation. - **Postoperative radiotherapy** significantly reduces the recurrence rate compared to excision alone, as keloids have a high tendency to recur. *Intralesional injection of triamcinolone* - While effective for some keloids, particularly smaller or flatter ones, **corticosteroid injections alone** have a lower long-term cure rate and are more often used for primary treatment or to reduce inflammation. - This method targets inflammation and fibroblast activity but may not fully prevent recurrence or completely flatten larger, more established keloids. *Surgical excision* - **Surgical excision alone** has a very high recurrence rate (up to 45-100%) for keloids because the removal of the keloid can itself trigger an exaggerated healing response. - It is rarely recommended as a monotherapy due to the significant risk of creating a larger or more aggressive keloid. *Localised irradiation* - **Radiotherapy alone** can be effective in some cases, particularly for preventing recurrence after excision, but it is generally not considered the primary treatment for an existing, bulky keloid. - Using radiation without prior excision might lead to incomplete regression and can be associated with side effects if the keloid is large.
Question 9: Surgical gloves are disposed in which BMW category ?
- A. Solid Waste
- B. Yellow Category (Infectious Waste) (Correct Answer)
- C. Expired or Discarded Medicines
- D. Human Anatomical Waste
Explanation: ***Yellow Category (Infectious Waste)*** - Surgical gloves are classified as **infectious waste** because they come into contact with blood, body fluids, and other potentially infectious materials during surgical procedures. - The Yellow Category in Bio-Medical Waste Management (BMW) Rules is designated for infectious waste, including items contaminated with **blood and body fluids**. - This is the correct disposal category for used surgical gloves. *Solid Waste* - This is a broad category for general waste that is not infectious or hazardous. - Surgical gloves, due to their potential contamination with infectious materials, are classified more specifically as biomedical waste under the Yellow category, not general solid waste. *Expired or Discarded Medicines* - This category is for pharmaceutical waste, including unused or expired medications. - Surgical gloves are medical devices used for protection, not medicinal products, and therefore do not belong in this category. *Human Anatomical Waste* - This category includes human tissues, organs, body parts, and recognizable anatomical specimens. - Surgical gloves are protective barriers used during procedures, not anatomical waste from the patient, and are classified separately as infectious waste.
Question 10: Which one of the following statements is correct about mesenteric cysts?
- A. It presents most commonly as a painless abdominal swelling. (Correct Answer)
- B. It is more common in males as compared to females.
- C. It occurs most commonly in children less than 18 years of age.
- D. Percutaneous aspiration with injection of sclerosant is the preferred treatment option.
Explanation: ***It presents most commonly as a painless abdominal swelling.*** - **Mesenteric cysts** typically manifest as a **slowly growing**, **asymptomatic abdominal mass**, which is often discovered incidentally or due to mild pressure symptoms. - Their **painless nature** and gradual enlargement contribute to this common presentation. *Percutaneous aspiration with injection of sclerosant is the preferred treatment option.* - **Simple aspiration** or sclerotherapy of mesenteric cysts is generally **contraindicated** due to the high risk of recurrence and potential for complications like infection or rupture. - The **preferred treatment** for mesenteric cysts is surgical excision to prevent recurrence and complications. *It is more common in males as compared to females.* - While rare overall, mesenteric cysts are **more prevalent in females** than males, although the exact reason for this disparity is not fully understood. - Some studies suggest a **female-to-male ratio** of approximately 2:1. *It occurs most commonly in children less than 18 years of age.* - Mesenteric cysts can occur at any age, but they are **more common in adults**, with the highest incidence typically reported in the third to fifth decades of life. - Although they can be found in children, this is **not the most common age group** for presentation.
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