ENT Oncology Indian Medical PG Practice Questions and MCQs
Practice Indian Medical PG questions for ENT Oncology. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
ENT Oncology Indian Medical PG Question 1: What is the most common oral cancer?
- A. Transition cell ca
- B. Mucoepidermoid
- C. Adenocarcinoma
- D. Squamous cell ca (Correct Answer)
ENT Oncology Explanation: ***Squamous cell ca***
- **Squamous cell carcinoma (SCC)** accounts for over **90% of all oral cancers**, making it the most prevalent type.
- It arises from the **stratified squamous epithelium** lining the oral cavity.
*Transition cell ca*
- This term is more commonly associated with tumors of the **urinary tract**, such as transitional cell carcinoma of the bladder.
- **Transitional cell carcinomas** are not typically found in the oral cavity.
*Mucoepidermoid*
- **Mucoepidermoid carcinoma** is the most common primary malignant tumor of **salivary glands**, not the oral cavity lining.
- While salivary glands are in the oral region, this type of cancer originates specifically from these glands.
*Adenocarcinoma*
- **Adenocarcinoma** originates from **glandular tissue** and represents a small percentage of oral cancers.
- It is much **less common** than squamous cell carcinoma in the oral cavity.
ENT Oncology Indian Medical PG Question 2: Treatment of choice for nasopharyngeal carcinoma T1 is:
- A. Radiation therapy (Correct Answer)
- B. Chemotherapy
- C. Observation
- D. Surgery
ENT Oncology Explanation: ***Radiation therapy***
- **Radiation therapy** (RT) is the primary treatment modality for early-stage (T1) nasopharyngeal carcinoma due to the tumor's high radiosensitivity and its anatomical location, which makes surgical resection challenging.
- The goal is to deliver a definitive dose of radiation to the tumor with curative intent, often using techniques like intensity-modulated radiation therapy (IMRT) to spare surrounding critical structures.
- T1 NPC has excellent cure rates (>90%) with RT alone.
*Chemotherapy*
- **Chemotherapy** is generally used in combination with radiation for locally advanced nasopharyngeal carcinoma (stage II-IVB) or for metastatic disease, not typically as monotherapy for T1 tumors.
- While concurrent chemoradiotherapy improves outcomes in more advanced stages, it's not the primary curative treatment for early-stage disease and adds unnecessary toxicity.
*Observation*
- **Observation** or watchful waiting is not appropriate for nasopharyngeal carcinoma, even at T1 stage, as NPC is an aggressive malignancy requiring active treatment.
- Unlike some indolent tumors, NPC has potential for local progression and early lymphatic spread, necessitating definitive treatment at diagnosis.
*Surgery*
- **Surgery** plays a very limited role in the primary treatment of nasopharyngeal carcinoma, especially for T1 lesions.
- The nasopharynx's deep anatomical location, proximity to skull base, critical neurovascular structures, and the tumor's infiltrative nature make surgical resection technically challenging with high morbidity.
- Surgery might be considered for salvage in selected cases of recurrent disease after radiation failure, but it is not the first-line treatment.
ENT Oncology Indian Medical PG Question 3: Classification system of bone tumors is -
- A. Enneking (Correct Answer)
- B. Edmonton
- C. TNM
- D. Manchester
ENT Oncology Explanation: ***Enneking***
- The **Enneking staging system** is widely used for primary **bone tumors**, particularly sarcomas.
- It classifies tumors based on their histological grade, local extension, and presence of metastases, which guides surgical planning and prognosis.
*Edmonton*
- The **Edmonton classification** is primarily used for **periprosthetic fractures** around hip and knee replacements.
- It does not classify primary bone tumors but rather describes fracture patterns related to prosthetic implants.
*TNM*
- The **TNM (Tumor, Node, Metastasis)** classification is a general staging system used for many types of cancer, but it's not the primary system for bone tumors.
- While applicable for some bone cancers, the **Enneking system** provides a more specific functional and anatomical assessment for limb-sparing surgery in bone sarcomas.
*Manchester*
- The **Manchester staging system** is primarily used for **lymphoma**, particularly Hodgkin lymphoma.
- It describes the extent of lymph node involvement and extralymphatic disease, completely unrelated to bone tumors.
ENT Oncology Indian Medical PG Question 4: Which of the following is an inappropriate indication for concomitant chemotherapy in cases of head and neck cancer?
- A. Metastatic advanced head and neck cancer (Correct Answer)
- B. As an organ-preserving method of treatment
- C. Primary treatment for patients with unresectable disease
- D. Postoperative case of intermediate stage resectable tumor
ENT Oncology Explanation: ***Metastatic advanced head and neck cancer***
- While chemotherapy is used in metastatic head and neck cancer, the term "concomitant chemotherapy" implies simultaneous administration with radiation therapy. For **metastatic disease**, the primary treatment strategy is usually **systemic chemotherapy** or targeted therapy, not necessarily concomitant with radiation to a local site with curative intent.
- Concomitant chemoradiation is primarily used for **locally advanced, non-metastatic disease** to improve local control and survival, not typically for systemic metastatic disease where the goal is palliation or systemic control.
*As an organ-preserving method of treatment*
- Concomitant chemoradiation is a well-established strategy for organ preservation, particularly in advanced laryngeal and pharyngeal cancers, allowing patients to avoid **laryngectomy** or extensive surgical resections while achieving similar oncologic outcomes.
- This approach aims to maintain **swallowing and speech function** by reducing tumor burden and eradicating microscopic disease.
*Primary treatment for patients with unresectable disease*
- For **unresectable locally advanced head and neck cancers**, concomitant chemoradiation is often considered the **definitive primary treatment** to achieve local control and improve survival outcomes.
- Surgery is not feasible in these cases due to tumor extent or involvement of critical structures, making chemoradiation the best curative option.
*Postoperative case of intermediate stage resectable tumor*
- **Adjuvant concomitant chemoradiation** is indicated postoperatively for resected tumors with high-risk features such as **extracapsular extension (ECE)** or positive surgical margins, even in intermediate stages.
- This is done to eradicate microscopic residual disease and reduce the risk of **local-regional recurrence**.
ENT Oncology Indian Medical PG Question 5: Which of the following stages of lip carcinoma does not have nodal involvement?
- A. T2N1
- B. T3N0 (Correct Answer)
- C. T2N2
- D. T1N1
ENT Oncology Explanation: ***T3N0***
- The **'N' classification** in the TNM staging system refers to **nodal involvement**. A stage with **'N0' indicates no regional lymph node metastasis**.
- A **T3 lesion** signifies a large primary tumor, but if it's accompanied by **N0**, it means there's no evidence of spread to the lymph nodes.
*T2N1*
- The **'N1' classification** indicates the presence of **regional lymph node metastasis**, specifically in a **single ipsilateral lymph node** that is 3 cm or less in its greatest dimension.
- This stage therefore **does have nodal involvement**, contradicting the premise of the question.
*T2N2*
- The **'N2' classification** signifies more advanced regional lymph node metastasis, such as a **single ipsilateral lymph node** greater than 3 cm but not more than 6 cm.
- It could also refer to **multiple ipsilateral lymph nodes**, none greater than 6 cm, or bilateral/contralateral lymph nodes, none greater than 6 cm. In all these cases, **nodal involvement is present**.
*T1N1*
- Similar to T2N1, the **'N1' component** in T1N1 indicates the presence of **regional lymph node metastasis** in a single ipsilateral lymph node of 3 cm or less.
- Therefore, this stage **does involve nodal spread**, despite having a smaller primary tumor (T1).
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