抄録
Toxoplasmosis is a rare disease. A 45-year-old female visited our hospital because of painless masses in her neck. Physical examination revealed bilaterally swollen lymph nodes. She underwent surgical excision. The histological diagnosis was probable toxoplasmosis. Serological examination confirmed the diagnosis. A 17-year-old male, her son, presented later with swollen lymph nodes. Serological examination confirmed the diagnosis of toxoplasmosis. Both patients were treated successfully with acetylspiramycin, a useful antitoxoplasma agent.