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27418 Pathology

A 50-year-old woman presents with fatigue and shortness of breath. Physical examination shows evidence of pulmonary edema, enlargement of the left atrium, and calcification of the mitral valve. A CT scan demonstrates a large obstructing mass in the left atrium. Before open heart surgery can be performed to remove the tumor, the patient suffers a stroke and expires. Which of the following hemodynamic disorders best explains the pathogenesis of stroke in this patient?

AArterial embolism
BAtherosclerosis
CCardiogenic shock
DHypertensive hemorrhage
Pathology
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27422 Pathology

A 16-year-old boy presents with a 24-hour history of severe abdominal pain, nausea, vomiting, and low-grade fever. The pain is initially periumbilical in location but has migrated to the right lower quadrant of the abdomen, with maximal tenderness elicited at a site one-third of the way between the crest of the ileum and the umbilicus (McBurney point). The leukocyte count is 14,000/mm3, with 74% segmented neutrophils and 12% bands. Surgery is performed. Which of the following describes the expected findings at the affected site?

AFistula (abnormal duct or passage) connecting to the abdominal wall
BGranulomatous inflammation with prominent aggregates of epithelioid cells and multinucleated giant cells
CMassive infiltration of lymphocytes and plasma cells
DProminent areas of edema, congestion, and a purulent reaction with localized areas of abscess formation
Pathology
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