title: Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 16-1987. A 14-year-old boy with fluctuating pancytopenia and a nasopharyngeal mass.
mesh_terms: D000234:Adenoids / Q000473:pathology; D000293:Adolescent; D001402:B-Lymphocytes; D001853:Bone Marrow / Q000473:pathology; D002878:Chromosomes, Human, Pair 1; D002881:Chromosomes, Human, Pair 12; D002883:Chromosomes, Human, Pair 14; D002898:Chromosomes, Human, Pair 8; D006801:Humans; D007945:Leukemia, Lymphoid / Q000235:genetics / Q000473:pathology*; D008297:Male; D009305:Nasopharynx / Q000473:pathology; D009361:Neoplasm Invasiveness; D014178:Translocation, Genetic; D014314:Trisomy