The British journal of dermatology
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Seven similar cases with deep ulceration probably due to wet cement are presented. Within 12 hours after making a concrete floor in a kneeling position, curved ulcers developed on both sides of both patellae. ⋯ One patient got wet concrete into her boots and, consequently, ulcers developed on her feet. The high alkalinity of calcium hydroxide in wet cement was the only apparent causative agent in every case.
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Serum MIF activity was studied in ten patients with sarcoidosis, fourteen with granuloma annulare, four with necrobiosis lipoidica, and nine with various dermatological diseases. Positive MIF activity was found in the sera of nine of the ten patients with sarcoidosis and eleven of the fourteen patients with granuloma annulare. ⋯ One of four patients with necrobiosis lipoidica demonstrated minimal serum MIF activity. Data on serum lymphokine activity in sarcoidosis and granuloma annulare suggest that these two diseases are related to delayed hypersensitivity mechanisms.