2cardiology sample

A 30-year-old male presents with a painful, swollen, and red right knee. He denies any history of trauma or recent infections. Physical examination reveals a warm, tender, and erythematous knee joint with limited range of motion. Laboratory tests show an elevated white blood cell count and an elevated C-reactive protein (CRP). Which of the following is the most likely diagnosis?

A 65-year-old male with a history of hypertension and type 2 diabetes presents with gradual-onset vision loss in both eyes. On funduscopic examination, there are signs of retinal hemorrhages, hard exudates, and cotton wool spots. What is the most likely diagnosis?

A 50-year-old woman presents with fatigue, pallor, and glossitis (inflamed tongue). Laboratory tests show a low hemoglobin level and microcytic, hypochromic red blood cells. Peripheral blood smear reveals target cells and basophilic stippling. Which of the following is the most likely underlying cause of this patient’s condition?

A 55-year-old male with a history of smoking presents with persistent cough, weight loss, and hemoptysis. Chest X-ray reveals a mass lesion in the right upper lobe of the lung. A biopsy confirms the diagnosis of non-small cell lung cancer. Which of the following is the most appropriate next step in the management of this patient?