pathology

A 62-year-old man complains of fatigue, progressive weakness and numbness of his arms and legs. Complete blood count shows decreased numbers of erythrocytes and increase in the mean cell volume. Removal of which of these structures requires lifelong administration of the vitamin involved in this case? A-Ascending colon B-Gall bladder C-Ileum D-Left kidney E-Tonsils Answer … Read more

A 28-year-old man presents to the emergency room after a bar fight in which he was shot. He is mildly distressed but oriented to place and time. Neurological examination reveals weakness of the right extremities with loss of touch, position and vibratory sensations on the same side accompanied by loss of pain and temperature on … Read more

A 26-year-old man presents to the clinic with a complaint of recurrent episodes of bloating, flatulence and diarrhea following eating dairy products. He mentions that he does not experience these symptoms if he does not drink milk or if he is fasting. What is the most likely cause of diarrhea in this patient? A-Inflammatory B-Osmotic … Read more

A 32-year-old woman with a history of generalized anxiety disorder develops numbness of her face particularly around her mouth. Physical examination and x-ray show no abnormalities other than markedly increased respiratory rate. Laboratory investigations are as follows: PO2: 100 mmHg PCO2: 30 mmHg Bicarbonate: 18 mEq/L pH of blood: 7.51 Which of these findings shows … Read more

A 37-year-old woman complains of watery diarrhea, abdominal cramps and periodic facial flushing for the last six months. Examination reveals bilateral wheezing and slightly enlarged liver. Urine analysis shows high levels of 5-hydroxyindoleacetic acid (5-HIAA). Multiple tumors are detected by a CT scan. What is the most likely primary site of these tumors? A-Colon B-Esophagus … Read more

A week old female presents for her first checkup. Examination reveals jaundice and splenomegaly. Laboratory investigations show: Total bilirubin level: 27 mg/dL Direct bilirubin: 0.6 mg/dL Hgb: 10.1 g/dL Reticulocytes: 6% A blood smear shows burr cells and spherocytosis. Which of these tests will be positive in this patient? A-Acid hemolysis test B-Coomb’s test C-Osmotic … Read more