Acute nonlymphocytic leukemia following gastric adenocarcinoma treated by surgery alone. Evidence for etiologic heterogeneity of "secondary" leukemias

Acute nonlymphocytic leukemia following lung cancer in a patient with a constitutional supernumerary chromosome

A patient with a constitutional bisatellited supernumerary marker chromosome developed a large cell lung carcinoma and subsequent acute nonlymphocytic leukemia (ANLL) of the M2 type showing an (8;21) translocation and del(9). The ANLL-M2 appeared to be independent of the lung carcinoma. The presence of the supernumerary chromosome might have been associated with the development of the two diseases.

Isolated leukemia cutis--a case report

A 67-year-old woman with acute myelomonocytic leukemia had a clinical course characterized by the initial appearance of leukemia cutis without bone marrow involvement. When marrow involvement subsequently occurred, induction chemotherapy cleared all manifestations of the illness. Shortly thereafter, while blood and bone marrow remained in remission, the skin lesions reappeared. The introduction of 6-thioguanine, as part of the maintenance treatment protocol, resulted in the rapid and permanent disappearance of the leukemic skin infiltrates.

Complex chromosomal abnormalities in a patient with lymphoid blast crisis of chronic myelogenous leukemia

A 46-year-old Chinese man underwent lymphoid blast crisis (Ia+, CALLA+, TdT+) after 5 years of chronic phase, Philadelphia-chromosome positive chronic myelogenous leukemia. Chromosome analysis revealed a hyperdiploid karyotype, including two Philadelphia chromosomes--55,XY,t(9;22) (q34;q11), +2, +5, +5, +6, +10, +18, +19, +21, +del(22)(qll----qter)--in the majority of the leukemic blasts. The constellation of a lymphoid blast crisis and complex chromosomal abnormalities usually associated with myeloid blast crisis as well as the clinical data are discussed.