Non-cancerous tumors which occur in the brain are called pituitary adenomas. This book is a wholesome account on the most known pathology of the pituitary gland in the sellar region. Topics range from epidemiology, symptoms and signs, imaging, therapeutic approaches and outcome of the active and passive pituitary tumors. There are multiple therapeutic approaches comprising of medications, endoscopic transphenoidal and open surgeries, and radiosurgeries like gamma knife surgeries. Visible indications have significant and unique arrangements which have been discussed. Endocrine secretion is another trait in 40% of pituitary adenomas and has been discussed in the book. Stereotactic radiosurgery and endoscopic surgery have both grown over the past few years. Resultantly, they have been mentioned and exclusively conferred upon in this book. Authors have presented an excellent overview on pituitary adenoma to readers.