Rosai-Dorfman disease with pleural involvement

Sinus histocytosis with massive lymphadenopathy [SHLM] disease is considered to be indolent with self limiting pathology. However, severe morbidity and mortality have been attributed to complications of SHLM. Lower respiratory tract involvement, which is often unfavorable, is rarely reported and carries particularly grave prognosis. A case of sinus histocytosis with massive lymphadenopathy [SHLM] is reportedhere. The patient had lower respiratory and pleural involvement