This book provides the description of the granulomatous diseases of otorhinolaryngology, head and neck with their characteristic features, investigations and management. It includes wide variety of infective, idiopathic, neoplastic, hereditary, reactive and various other types of chronic granulomatous reaction in the ear, nose, throat and head neck region. Further, the description is supported with various illustrations including clinical photographs, radiological pictures of CT scan, MRI scan etc. Histopathological and microbiological images which show characteristics and differentiating features are also included to aid in the diagnosis of the diseases. Histopathological colored images with high magnification and immunohistochemistry images are provided for better illustrations. This book also elaborates the important medical and surgical management of the granulomatous diseases. Every chapter ends with the ‘Essential features’ of that particular granulomatous disease, and this will certainly help the post-grad students and clinicians to differentiate the diseases, early diagnosis and management of the patients with chronic granulomatous diseases.