A 37-year-old patient was admitted to the hospital with severe dyspnoea and cough. Baseline investigations revealed haemoglobin of 16.2 g/dl, haematocrit of 48.8% and a total leucocyte count of 8800/mm³. Comprehensive metabolic profile and serum and urine protein electrophoresis findings were normal. Arterial blood gas analysis showed type 1 respiratory failure. Spirometry showed restrictive ventilatory disturbances (vital capacity 53%, forced expiratory volume in 1 s 91%). A posterior–anterior chest radiograph showed bilateral diffuse, nodular (‘sandstorm-like’) calcifications in both lungs (figure 1A). A high-resolution …