Clinical Section 19anaemia which improved rapidly during the remission and then relapsed. Biopsy: Subcutaneous tissue showing subacute inflammation with cellular exudate concentrated round the small arterioles and venules. Fibrinous necrosis of these vessels. Thrombosis not a feature. No organisms demonstrated. Condition: Periarteritis nodosa. Mantoux and Widal's tests negative. X-ray examination negative. Electrocardiogram (eight months after onset) normal.
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