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* From the Franz Volhard Clinic, Medical Faculty of the Charité, Humboldt University of Berlin, Berlin, Germany.
Correspondence to: Friedrich C. Luft, MD, Franz-Volhard-Clinic, Wiltbergstrasse 50, 13125 Berlin, Germany; e-mail: luft{at}fvk-berlin.de
Pulmonary disease due to talc, a group of hydrous magnesium
silicates, is almost exclusively encountered after occupational
exposure. One form of this rare disorder is talc granulomatosis. In
varying degrees, hypercalcemia is typical of granulomatous disease but
has not yet been reported in talcosis. We report the case of a former
mold maker who presented with hypercalcemia. Laboratory findings
indicated extra-renal 1-
-hydroxylation of 25-hydroxyvitamin D.
Pulmonary infiltrates prompted a lung biopsy that disclosed talc
granulomatosis. We suggest that talc granulomatosis should be added to
the list of granulomatous disorders capable of causing hypercalcemia
due to increased extra-renal 1-
-hydroxylation of 25-hydroxyvitamin
D.
Key Words: granulomatous inflammation hypercalcemia talc vitamin D
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