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3828 Pathology

A 48-year-old man complains of weakness and easy fatigability for 6 weeks. He has worked for 20 years in a chemical factory that produces a variety of plastics and other synthetic compounds. A complete blood count shows a hemoglobin level of 8.2 g/dL, WBC count of 45,000/mL, and a platelet count of 40,000/mL. Examination of a bone marrow aspirate reveals numerous malignant myeloblasts, and a diagnosis of acute myeloid leukemia is made. Exposure to which of the following agents is the most likely cause of this patient’s hematologic disease?

ABenzene
BBenzopyrene
CCarbon tetrachloride
DGlycerin
Pathology
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3832 Pathology

A 23-year-old woman, G2, P1, gave birth at term to a boy of normal weight and length following an uncomplicated pregnancy. The infant initially did well, but at 6 weeks, he began feeding poorly for 1 week, and his mother noticed that much of the milk he ingested was forcefully vomited within 1 hour. Now, on physical examination, the infant is afebrile, and there are no external anomalies. A midabdominal mass is palpable. Bowel sounds are active. The medical history indicates that both the mother and her first child had the same illness during infancy. Which of the following conditions is most likely to explain these findings?

AAnnular pancreas
BDiaphragmatic hernia
CDuodenal atresia
DPyloric stenosis
Pathology
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