text: In medicine,<unk>  is an excessive number of histiocytes,that is an excessive number of tissue macrophages, and is typically used to refer to a group of rare diseases which share this as a characteristic.  Occasionally and confusingly it is sometimes used to refer to individual diseases.<unk>  (and malignant<unk>  are both important in veterinary as well as human pathology.
option_0: Histiocytosis
option_1: Pulmonary amyloidosis
option_2: Non-Hodgkin lymphoma
option_3: Angiolymphoid hyperplasia with eosinophilia
option_4: B-cell lymphoma
option_5: Lymphomatoid granulomatosis
option_6: Tuberculosis
option_7: Sarcoidosis