Cryptococcus gattii Genotype VGIIa Infection in an Immunocompetent Japanese Patient: A Case Report and Mini-review

摘要

A 39-year-old man presented to our hospital with a four-week history of headache and a two-week history of low-grade fever. Chest X-rays showed a tumor of approximately 50 mm in size in the right lower field. A histopathological examination of a transbronchial lung biopsy specimen from the right S9/10 revealed numerous fungal elements that appeared as encapsulated yeast with clear halos. Gadolinium-enhanced brain magnetic resonance images showed multiple cerebral nodules. Cryptococcus gattii (Genotype VGIIa) was isolated from the bronchial lavage and cerebrospinal fluid specimens. The patient was an immunocompetent Japanese man who had not recently traveled to a C. gattii-endemic area.