Bronchogenic carcinoma developing during a long-term course of pulmonary Langerhans' cell histiocytosis.

A 30-year-old man patient was admitted to our clinic with complaints including cough, dyspnea, and chest pain. He had been diagnosed with pulmonary Langerhans' cell histiocytosis (LCH) 9 years previously. HRCT of the thorax demonstrated the presence of diffuse emphysematous areas in both lungs with a honeycomb appearance, an increase in reticular density at the lower lobes, a mass lesion in the left hilus, and a mass lesion at the lower lobe of the left lung.

Pleural effusion as the first sign of multiple myeloma.

Multiple myeloma (MM) is a rare disorder that affects all tissues, except reticuloendothelial tissues, and seldom causes a myelomatous pleural effusion. A 56-year-old male patient attended our clinic complaining of shortness of breath and fatigue for the past month. A posteroanterior chest radiograph revealed a left pleural effusion, which was subsequently assessed as being exudative in nature.