A male, age 9, was found with abnormal shadow in the chest by chest X-ray on school physical checkup. Anteroposterior and lateral film reveals a 4cm X 4cm shadow of even density in the back of the right chest. The patients recalled that the patient had coughed occasionally for nearly 1 month. The most likely diagnosis is

  • A: Bronchogenic carcinoma
  • B: Pulmonary tuberculoma
  • C: Mediastinal neurofibroma
  • D: Teratoma
  • E: Bronchial cyst

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