Infectious Diseases — MCQs

A 5-year-old boy presents with a one-week history of diarrhea, characterized by an average of six low-volume stools per day that are mucoid and sometimes blood-tinged. Physical examination reveals a temperature of 37.4°C, mild lower abdominal tenderness, and no palpable masses. Stool culture is positive for Shigella sonnei. Which of the following microscopic findings would most likely be observed in the colon of this child?

Juvenile papillomatosis is caused by which virus?

Lepra cells found in lepromatous leprosy are?

A 40-year-old immunocompromised patient presented with complaints of dysphagia. Upper GI endoscopy showed multiple serpiginous ulcers in the distal esophagus. Biopsy from the esophagus showed characteristic findings. What is the diagnosis?

A patient with chest pain was diagnosed with myocardial infarction and received immediate thrombolytic therapy. Despite this, their cardiac condition worsened, leading to death. The patient was posthumously diagnosed with cardiac reperfusion injury. Which of the following histological findings is expected in the cardiac tissue following reperfusion injury?

In a study of individuals living in a subtropical region where an irrigation project has been completed, rice farmers have experienced an increased rate of an infectious illness since the project began. Investigators determined that the infection is acquired through cercariae that penetrate the skin. The cercariae are released from snails living in the irrigation canals. Infected individuals develop progressive ascites. Which of the following pathologic findings is most likely to be present in these infected individuals as a consequence of the infection?

Systemic miliary tuberculosis occurs when spread occurs via which route?

The center of a tubercular granuloma is typically formed by which component?

A 7-year-old child has had worsening performance in school for the past 4 months due to decreased vision. Examination of the right eye shows diffuse punctate inflammation of the cornea and pannus, which is a growth of fibrovascular tissue from the conjunctiva onto the cornea. Microscopic examination of a corneal scraping shows lymphocytes, plasma cells, neutrophils, and scattered corneal epithelial cells that have cytoplasmic inclusion bodies. Which of the following infectious agents is most likely to produce these findings?

"Ghon focus" is associated with which of the following conditions?