Abstract: Castleman's disease is a lymphoproliferative disease which is rare and hard to diagnose, it can involve any lymph nodes of the body, and lacks characteristic clinical diagnostic criteria. This paper reported a patient with Castleman`s disease in the neck, its classification was multicentric and hyaline vascular type. PET-CT, ultrasound examination and histological findings were discussed in order to improve in depth understanding of the disease.

Key words: Castleman's disease, PET-CT, Histological examination