1. A 54-year-old male with a history of smoking presents with chronic cough and weight loss. A chest X-ray reveals a mass in the upper lobe of the right lung. Which of the following is the most likely diagnosis? A. Tuberculosis B. Lung abscess C. Bronchitis D. Lung cancer Answer: D. Lung cancer Rationale: The patient's history of smoking and the presence of a lung mass on imaging are highly suggestive of lung cancer. 2. A 30-year-old female reports fatigue, hair loss, and cold intolerance. Laboratory tests show elevated thyroid-stimulating hormone (TSH) levels. What is the most probable condition? A. Hyperthyroidism B. Hypothyroidism C. Thyroid nodule D. Thyroiditis Answer: B. Hypothyroidism Rationale: Elevated TSH levels and clinical symptoms such as fatigue, hair loss, and cold intolerance are indicative of hypothyroidism.