Updated Kiel classification

The emergence of Sézary cells during the treatment of cutaneous T-cell lymphoma

A 52-year-old man with cutaneous T-cell lymphoma presented with Sézary syndrome-like features including exfoliative erythroderma, lymphadenopathy and leukaemic change without the presence of Sézary cells. Southern blot hybridization analysis revealed T-cell receptor beta-chain gene rearrangements, both in the peripheral blood and in the lymph node. Atypical large cells with convoluted nuclei (Sézary-like cells) first appeared during combined chemotherapy. Although Sézary syndrome is characterized by its particular manifestations and the presence of Sézary cells in the peripheral blood, the clinical significance of Sézary cells has been questioned. It still needs to be decided whether or not the Sézary cell is malignant.

A case/control study of adult haematological malignancies in relation to overhead powerlines

A population based case control study of adult haematological malignancy and distance from, and magnetic fields associated with, overhead (OH) power lines has been carried out in the North West and Yorkshire regions of England. Three-thousand, one hundred and forty-four cases with histologically proven disease were entered into the study. One control per case, matched for age, sex, year of diagnosis and health district of residence, was selected from hospital discharges. Seven per cent of cases and controls lived near to OH power lines as defined by the study protocol. The measure of exposure used was the calculated magnetic field strength at each of these addresses due to maximum load currents carried by OH power lines in the 5 years preceding diagnosis. The odds ratio (OR) for living within 50 m of an OH line was 1.29 with a 95% Confidence Interval (CI) of 0.99-1.68 but a chi 2 test for trend with distance was not statistically significant. The analysis of calculated magnetic fields, did not produce any statistically odds ratios. The OR for magnetic fields greater than or equal to 0.1 mG was 1.03 (95% CI 0.81 1.32). Analysis of magnetic fields greater than or equal to 3.0 mG gave an OR of 1.87 (95% CI 0.79 4.42), but this result is based on small numbers. No evidence was found for confounding by the type of dwelling which was used as a partial surrogate for socio-economic status.