Localized lymphadenitis due to leishmania simulating toxoplasmosis. Value of electron microscopy for differentiation

Two cases of cervical adenopathy are described. One manifested as lymphoma clinically. Both patients were found to have primary lymph node leishmaniasis without cutaneous, mucosal or visceral involvement. The histologic appearance simulated toxoplasma lymphadenitis. Electron microscopic study differentiated the organism from Toxoplasma, and the condition responded well to antimony therapy.