All Subjects Medicine Surgery Pathology Anatomy Pharmacology Social & Preventive Medicine Microbiology Gynaecology & Obstetrics Dental Physiology Biochemistry Pediatrics
Showing 15321 questions
Sort:
8353 Pathology

A 45-year-old man experiences crushing substernal chest pain after arriving at work one morning. Over the next 4 hours, the pain persists and begins to radiate to his left arm. He becomes diaphoretic and short of breath but waits until the end of his 8-hour shift to go to the hospital. An elevated serum value of which of the following laboratory tests would be most useful for the diagnosis of this patient on admission to the hospital?

AALT
BAST
CCK-MB fraction
DC-reactive protein
Pathology
View Explanation →
8354 Pathology

A 26-year-old man has occasionally felt pain in the scrotum for the past 3 months. On physical examination, the right testis is more tender than the left but does not appear to be enlarged. An ultrasound scan shows a 1.5-cm mass within the right testis. A right orchiectomy is performed, and gross examination shows the mass to be hemorrhagic and soft. A retroperitoneal lymph node dissection is done. In sections of the lymph nodes, a neoplasm is found with extensive necrosis and hemorrhage. Microscopic examination shows that areas of viable tumors are composed of cuboidal cells intermingled with large eosinophilic syncytial cells containing multiple dark, pleomorphic nuclei. Immunohistochemical staining of syncytial cells is most likely to be positive for which of the following?

Aa-Fetoprotein
BCarcinoembryonic antigen
CCD20
DHuman chorionic gonadotropin
Pathology
View Explanation →