castleman's disease is an uncommon cause of lymph node enlargement that mostly involves the mediastinum and lung hilum. it is divided into 2 types: localized, which is usually asymptomatic and presents with a mass lesion; and multicentric, which is characterized by chills, anemia, generalized lymphadenopathy and hepatosplenomegaly. an extrathoracic site of involvement is very uncommon, and may ...