Combined Modality Therapy — MCQs
Treatment of choice for carcinoma larynx T1N0M0 stage -
Which of the following reflects a key health initiative promoted by the Colombo Plan?
What is the primary indication for the Nigro Regimen?
RPLND and Chemotherapy may be used in management of?
Best treatment strategy for carcinoma of the anal canal:
Treatment of resectable T4N0M0 stage of head and neck carcinoma is?
A 44 year old woman presents with polymenorrhoea for one year. Clinical examination reveals bulky uterus with no other abnormality. D & C report is simple hyperplasia. What is the treatment of choice?
Which of the following is the best indicator of prognosis of soft tissue sarcoma?
Which of the following is not done in carcinoma esophagus?
A patient with depression was given Imipramine for 2 weeks. Relatives noticed increased excitement, colorful clothes, and increased talking. What is the next step in management?
Combined Modality Therapy Indian Medical PG Practice Questions and MCQs
Question 1: Treatment of choice for carcinoma larynx T1N0M0 stage -
- A. External beam radiotherapy (Correct Answer)
- B. Surgery
- C. Radioactive implants
- D. Surgery & radiotherapy
Explanation: ***External beam radiotherapy*** - For **early-stage laryngeal cancer (T1N0M0)**, both **radiotherapy and surgery are considered equally effective first-line treatments** with excellent local control rates (>90%). - EBRT offers the advantage of being **completely non-invasive** while preserving vocal function and avoiding surgical risks. - Treatment duration is typically **6-7 weeks**, requiring patient compliance with daily fractions. - Preferred when patient prefers non-invasive approach or has comorbidities making surgery high-risk. *Surgery* - **Transoral laser microsurgery (TLS)** or endoscopic **cordectomy** are equally effective surgical options for T1 glottic cancer with cure rates comparable to radiotherapy. - Modern laser techniques provide excellent **voice preservation** with minimal morbidity. - Advantages include **shorter treatment time** (single procedure), obtaining tissue for histopathology, and preserving radiotherapy as salvage option. - Both **surgery and radiotherapy are Category 1 recommendations** for T1N0M0 disease; choice depends on institutional expertise, patient preference, and individual factors. *Radioactive implants* - **Brachytherapy (radioactive implants)** can be used for early-stage glottic cancer at specialized centers. - However, **external beam radiotherapy** is more commonly employed due to greater accessibility and extensive outcome data. *Surgery & radiotherapy* - **Combined modality treatment** is indicated for **locally advanced disease** (T3-T4) or **node-positive disease** (N+). - For **T1N0M0 disease**, single modality (either surgery OR radiotherapy) is sufficient and preferred to minimize treatment-related morbidity.
Question 2: Which of the following reflects a key health initiative promoted by the Colombo Plan?
- A. Promoting cobalt therapy initiatives for cancer treatment
- B. Strengthening human resources for healthcare (Correct Answer)
- C. Establishing treatment facilities for various diseases
- D. Support for diagnostic imaging technology in healthcare
Explanation: ***Strengthening human resources for healthcare*** - The Colombo Plan primarily focused on **technical cooperation** and **human resource development** in developing member countries - This included providing **fellowships** for training doctors, nurses, and other health professionals, and sending experts to assist in health education and infrastructure - The core mandate was **capacity building** through training and expertise, enabling countries to develop sustainable healthcare systems *Establishing treatment facilities for various diseases* - While improved health outcomes often lead to better facilities, the core mandate of the Colombo Plan was **capacity building** rather than direct construction or funding of treatment centers - The focus was on equipping local professionals to manage and develop their own health systems *Promoting cobalt therapy initiatives for cancer treatment* - While cancer treatment is crucial, cobalt therapy initiatives were not a primary or defining feature of the Colombo Plan's health strategy - The plan emphasized a broader approach to **healthcare infrastructure** and **human capital development** across multiple health domains *Support for diagnostic imaging technology in healthcare* - Support for specific technologies like diagnostic imaging was less prominent than the overarching goal of **human resource development** - The plan's emphasis was on foundational **training and expertise** across various health sectors rather than targeted equipment provision
Question 3: What is the primary indication for the Nigro Regimen?
- A. Anal Carcinoma (Correct Answer)
- B. Rectal Carcinoma
- C. Sigmoid Colon Carcinoma
- D. Duodenal Carcinoma
Explanation: ***Anal Carcinoma*** - The **Nigro Regimen** is a standard treatment protocol involving concurrent **chemotherapy** (5-fluorouracil and mitomycin C) and **radiation therapy** for anal carcinoma. - Its primary goal is to achieve **organ preservation** and avoid the need for abdominoperineal resection, which would result in a permanent colostomy. *Rectal Carcinoma* - Treatment for **rectal carcinoma** often involves surgery (e.g., low anterior resection), radiation, and chemotherapy, but the specific **Nigro Regimen** is not the primary protocol. - While some chemotherapy drugs might overlap, the combined regimen and indications are distinct. *Sigmoid Colon Carcinoma* - **Sigmoid colon carcinoma** is typically treated primarily with **surgical resection**, often followed by adjuvant chemotherapy based on staging. - The Nigro Regimen is specifically designed for tumors in the **anal canal**, not the more proximal colon. *Duodenal Carcinoma* - **Duodenal carcinoma** is a rare gastrointestinal cancer usually managed with surgical resection, such as a **Whipple procedure**, and sometimes adjuvant chemotherapy. - This type of cancer is anatomically and etiologically distinct from anal carcinoma, making the Nigro Regimen irrelevant.
Question 4: RPLND and Chemotherapy may be used in management of?
- A. Non-seminomatous germ cell tumors of the testis (Correct Answer)
- B. Non-germ cell tumors
- C. Seminomatous germ cell tumors
- D. Lymphoma of the testis
Explanation: ***Non-seminomatous germ cell tumors of the testis*** - **Retroperitoneal lymph node dissection (RPLND)** and **chemotherapy** are key components in the management of non-seminomatous germ cell tumors (NSGCTs), especially for metastatic disease or after initial orchidectomy. - The combination therapy addresses both local nodal involvement (RPLND) and widespread micrometastases (chemotherapy), which are common in NSGCTs. *Non-germ cell tumors* - This is a broad category, and while some non-germ cell testicular tumors may require surgery or chemotherapy, **RPLND** is not a standard part of their management in the same way it is for germ cell tumors. - The specific treatment depends on the tumor type (e.g., Leydig cell tumor, Sertoli cell tumor), stage, and histology, and often involves less aggressive approaches. *Seminomatous germ cell tumors* - **Seminomas** are highly radiosensitive and often respond well to **radiation therapy**, particularly for localized disease or retroperitoneal nodal involvement. - While chemotherapy is used for metastatic seminoma, **RPLND** is generally not indicated for seminomas due to their radiosensitivity and different metastatic patterns compared to NSGCTs. *Lymphoma of the testis* - Testicular lymphoma is a type of **non-Hodgkin lymphoma** and is primarily managed with systemic **chemotherapy** (e.g., R-CHOP) and sometimes radiation therapy. - **RPLND** is not a standard treatment modality for testicular lymphoma, as it is a systemic disease requiring systemic treatment, not local surgical excision of retroperitoneal nodes.
Question 5: Best treatment strategy for carcinoma of the anal canal:
- A. Chemoradiation (Correct Answer)
- B. Radiation
- C. Surgery
- D. Chemotherapy
Explanation: ***Chemoradiation*** - Carcinoma of the anal canal is primarily treated with **chemoradiation** (combinations of chemotherapy and radiation therapy) as the standard of care to achieve **organ preservation**. - This combined approach improves local control and survival rates compared to either modality alone, making it the **primary curative strategy** for most localized anal canal cancers. *Radiation* - While radiation therapy is a crucial component of anal canal cancer treatment, using it alone (**monotherapy**) is generally less effective than chemoradiation. - **Local recurrence rates** are higher with radiation alone compared to combined modality treatment. *Surgery* - Surgery, specifically **abdominoperineal resection (APR)**, is typically reserved for **recurrent disease** or cases where chemoradiation fails. - Initial radical surgery for anal canal cancer leads to significant morbidity (e.g., permanent colostomy) and is generally avoided as a primary treatment due to the success of chemoradiation. *Chemotherapy* - Chemotherapy alone is **not curative** for localized anal canal carcinoma. - It is primarily used in combination with radiation (chemoradiation) to sensitize the tumor to radiation and improve local control, or as treatment for **metastatic disease**.
Question 6: Treatment of resectable T4N0M0 stage of head and neck carcinoma is?
- A. Radiotherapy alone
- B. Surgery and Radiotherapy (Correct Answer)
- C. Chemoradiation
- D. Surgery alone
Explanation: ***Surgery and Radiotherapy*** - For **resectable T4N0M0 head and neck carcinoma**, the standard treatment is **surgical resection** of the primary tumor followed by **adjuvant radiotherapy**. - This approach achieves optimal **local control** for advanced primary tumors without nodal involvement. - **Adjuvant radiotherapy** is essential for T4 tumors due to high risk of microscopic residual disease and local recurrence. - Surgery allows for complete tumor removal with negative margins, while radiotherapy addresses subclinical disease. *Radiotherapy alone* - Radiotherapy alone is **insufficient as monotherapy** for T4 tumors due to the large tumor burden and extensive local invasion. - Single modality radiation cannot reliably achieve adequate tumor control for advanced primary lesions. - Generally reserved for early-stage disease or patients unfit for surgery. *Chemoradiation* - **Definitive chemoradiation** is an alternative for **unresectable T4 tumors** or when organ preservation is desired (e.g., laryngeal cancer). - For **resectable** T4N0M0 disease, surgery with adjuvant RT is preferred as it provides better local control and allows pathological staging. - Chemoradiation may be used postoperatively if high-risk features are found (positive margins, perineural invasion, extranodal extension). - In this **N0 case with resectable tumor**, upfront surgery is the preferred initial approach. *Surgery alone* - While surgical resection is crucial for T4 tumors, **surgery alone is inadequate** due to high risk of locoregional recurrence. - T4 classification indicates extensive local invasion, necessitating **adjuvant radiotherapy** to eradicate microscopic disease. - Combined modality treatment (surgery + RT) significantly improves local control and survival compared to surgery alone.
Question 7: A 44 year old woman presents with polymenorrhoea for one year. Clinical examination reveals bulky uterus with no other abnormality. D & C report is simple hyperplasia. What is the treatment of choice?
- A. Progestogen therapy (Correct Answer)
- B. GnRH analogues
- C. Combined oral pills
- D. Total hysterectomy with bilateral salpingo-oophorectomy
Explanation: ***Progestogen therapy*** - **Simple hyperplasia** is a benign condition of the endometrium and typically responds well to progestogen therapy, which helps to **antagonize estrogen's proliferative effects** on the endometrium. - This treatment helps to induce secretory changes and shedding of the hyperplastic tissue, effectively managing the associated **polymenorrhoea**. *GnRH analogues* - While GnRH analogues can induce a **hypoestrogenic state**, they are generally reserved for more severe forms of endometrial hyperplasia (e.g., atypical hyperplasia) or conditions like **endometriosis** and **fibroids** that do not respond to progestogens. - Their significant side effects, resembling menopause, make them less suitable as an initial choice for simple hyperplasia. *Combined oral pills* - Combined oral contraceptive pills primarily work by **suppressing ovulation** and thinning the endometrial lining, which can help with heavy bleeding but are not the primary treatment for established endometrial hyperplasia. - While they contain progestins, the progestin dose and regimen in combined oral pills are typically not sufficient or specifically tailored to reverse significant endometrial hyperplasia. *Total hysterectomy with bilateral salpingo-oophorectomy* - This is a **surgical intervention** and is an overly aggressive treatment for simple endometrial hyperplasia, which carries a very low risk of progression to cancer. - It would be considered only for persistent atypical hyperplasia, cancer, or if a woman has completed childbearing and has other compelling reasons for surgery.
Question 8: Which of the following is the best indicator of prognosis of soft tissue sarcoma?
- A. Tumour size
- B. Nodal metastasis
- C. Histological type
- D. Tumour grade (Correct Answer)
Explanation: ***Tumour grade*** - **Tumor grade** quantifies the degree of cellular differentiation, mitotic activity, and necrosis within the tumor, reflecting its aggressive potential. - A **higher tumor grade** is directly associated with a poorer prognosis, increased risk of local recurrence, and distant metastasis in soft tissue sarcomas. *Tumour size* - While larger tumor size (e.g., >5 cm) is generally associated with a worse prognosis, it is primarily a factor in **staging**, not the most critical prognostic indicator. - **Tumor grade** provides more fundamental information about the biological aggressiveness of the tumor cells regardless of their current size. *Nodal metastasis* - **Nodal metastasis** in soft tissue sarcomas is relatively uncommon (less than 5% of cases) compared to carcinomas, and its presence is a significant negative prognostic factor. - However, because it is rare, it doesn't serve as the *primary* indicator for the majority of sarcoma patients, where tumor grade is more universally applicable. *Histological type* - The **histological type** (e.g., liposarcoma, leiomyosarcoma) helps classify the sarcoma, but different subtypes can have a wide range of biological behavior. - While certain types may have a generally better or worse prognosis, the **grade** *within* that histological type is a more precise predictor of individual patient outcomes.
Question 9: Which of the following is not done in carcinoma esophagus?
- A. pH - metry/monitoring (Correct Answer)
- B. CT chest
- C. PET scan
- D. Biopsy
Explanation: ***pH - metry/monitoring*** - **pH metry/monitoring** is primarily used to diagnose **gastroesophageal reflux disease (GERD)**, which is not a direct diagnostic tool for esophageal carcinoma itself. - While GERD is a risk factor for **Barrett's esophagus** and subsequently adenocarcinoma of the esophagus, pH monitoring does not directly identify or stage the cancer. *CT chest* - **CT (Computed Tomography) chest** is routinely performed in esophageal carcinoma to assess the **local extent** of the tumor and identify potential **lymph node involvement** or **metastasis** to other organs. - It is crucial for **staging** the disease and guiding treatment decisions such as resectability. *PET scan* - A **PET (Positron Emission Tomography) scan** is highly useful for detecting **distant metastases** and identifying **occult disease** not visible on CT, especially in cases of suspected advanced esophageal carcinoma. - It helps in **accurate staging** and avoiding futile surgery in patients with metastatic disease. *Biopsy* - **Biopsy**, typically performed during endoscopy, is the **gold standard** for confirming the diagnosis of esophageal carcinoma by obtaining tissue for **histopathological examination**. - It identifies the cell type (e.g., adenocarcinoma, squamous cell carcinoma) and grade of the tumor, which is essential for treatment planning.
Question 10: A patient with depression was given Imipramine for 2 weeks. Relatives noticed increased excitement, colorful clothes, and increased talking. What is the next step in management?
- A. Continue Imipramine alone
- B. Manage with Valproate alone
- C. Discontinue Imipramine and start Valproate (Correct Answer)
- D. Antipsychotic with Imipramine continued
Explanation: ***Discontinue Imipramine and start Valproate*** - The patient's symptoms (increased excitement, colorful clothes, increased talking) after starting an antidepressant like **Imipramine** suggest a **manic switch**, indicating undiagnosed **bipolar disorder**. - **Imipramine** should be discontinued as it can exacerbate mania, and a mood stabilizer like **Valproate** is necessary to treat the manic episode. *Continue Imipramine alone* - Continuing Imipramine would likely worsen the manic symptoms, leading to increased agitation and potential harm. - Antidepressants can trigger or worsen manic episodes in individuals with underlying bipolar disorder. *Manage with Valproate alone* - While Valproate is an appropriate treatment for acute mania, simply managing with Valproate alone without discontinuing the offending antidepressant would be suboptimal. - The continued presence of Imipramine would counteract the mood-stabilizing effects of Valproate. *Antipsychotic with Imipramine continued* - Adding an antipsychotic might manage some acute manic symptoms, but continuing Imipramine would maintain the driving force behind the manic switch. - The primary action should be to remove the causative agent (Imipramine) and replace it with a mood stabilizer.
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