PRIMARY PULMONARY PLASMACYTOMA WITH LOBAR CONSOLIDATION - AN UNUSUAL PRESENTATION

Extramedullary plasmacytoma is a rare form of plasma cell tumor that f requently involves the upper respiratory tract. Primary pulmonary plas macytoma is even more rare. The usual presentation of primary pulmonar y plasmacytoma is a solitary pulmonary nodule. We describe the case of a 58-year-old woman who presented with the chief complaints of progre ssive dyspnea on exertion, cough, and subsequently, hemoptysis. The ma in finding on chest imaging studies, including plain radiography, sono graphy, computed tomography, and magnetic resonance imaging, was conso lidation of the right middle lobe. Percutaneous transthoracic lung bio psy of the right middle lobe demonstrated sheets of atypical plasma ce lls. Immunohistochemical study showed IgA lambda monoclonality. A bone marrow study and whole body bone scan showed normal findings. To the best of our knowledge, this is the first reported case of primacy pulm onary plasmacytoma presenting with lobar consolidation of the lung but without a well-defined tumor mass.