We report a female patient with Seckel syndrome who developed acute myeloid leukaemia at the age of 26 years. Analysis of bone marrow chromosomes showed an abnormal clone with abnormalities involving multiple chromosomes, including monosomy 7, trisomy 8, trisomy 11, and loss of the long arm of chromosome 5. After treatment with chemotherapy, the patient experienced severe toxicity with profound bone marrow aplasia and died of pneumonia two months later. We suggest that patients with Seckel syndrome may be at risk of developing myelodysplasia and acute myeloid leukaemia. They may also have poor tolerance to cytotoxic therapy.

A man with Fabry’s disease received a renal allograft from a heterozygous sister. Renal allograft dysfunction necessitated an allograft biopsy 5.5 years after transplantation. Extensive accumulation of Fabry’s disease deposits in the glomeruli, tubules, blood vessels and interstitium was noted.

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Viable cell suspensions were prepared from 31 nodes diagnosed non-Hodgkin's malignant lymphoma, and from 30 non-malignant nodes. The cells were examined and counted by phase contrast microscopy. The suspensions were characterized by the percentage of large cells and by a colchicine-sensitivity index.The finding of more than 6% large cells or the finding of a sensitivity index of more than 30% was considered a positive test for a malignant lymphoma.According to these criteria there were 2 false positives in 30 reactive nodes and one false negative in 31 malignant nodes. Findings on 3 nodes diagnosed angioimmunoblastic lymphadenopathy suggested malignancy. The colchicinesensitivity index of blood lymphocytes seemed useful for monitoring lymphoma patients for leukemic involvement.Cancer 4 1 : 184 5 -185 6, 1 9 78.

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