Strongyloides hyperinfection in a patient with sarcoidosis.

A 51-year-old-woman presented with chronic eosinophilia, a diffuse interstitial lung pattern on CT and splenomegaly with hypodense lesions. A diagnosis of sarcoidosis was determined from a lung biopsy. Hyperinfection with strongyloides following treatment with systemic steroids explains the presence of eosinophilia and splenic involvement.