Ovarian apoplexy: Ovarian apoplexy is a sudden rupture in the ovary, commonly at the site of a cyst, accompanied by hemorrhage in the ovarian tissue and/or intraperitoneal bleeding.http://www.Pituitary adenomaHypophysitis: Hypophysitis refers to an inflammation of the pituitary gland. Hypophysitis is rare and not fully understood.Thyroid adenomaChromophobe cellOculomotor nerve palsyMarcus Gunn phenomenonProlactinomaAcidophil cellCentral nervous system cystAnterior pituitary: A major organ of the endocrine system, the anterior pituitary (also called the adenohypophysis or pars anterior), is the glandular, anterior lobe that together with the posterior lobe (posterior pituitary, or the neurohypophysis) makes up the pituitary gland (hypophysis). The anterior pituitary regulates several physiological processes including stress, growth, reproduction and lactation.Spontaneous remission: Spontaneous remission, also called spontaneous healing or spontaneous regression, is an unexpected improvement or cure from a disease that appears to be progressing in its severity. These terms are commonly used for unexpected transient or final improvements in cancer.Rondo HattonHyperintensityTRH stimulation test: Prior to the availability of sensitive TSH assays, thyrotropin releasing hormone (TRH)International Classification of Headache Disorders: The International Classification of Headache Disorders (ICHD) is a detailed hierarchical classification of all headache-related disorders published by the International Headache Society. It is considered the official classification of headaches by the World Health Organization, and, in 1992, was incorporated into the 10th edition of their International Classification of Diseases (ICD-10).Cushing reflex: Cushing reflex (also referred to as the vasopressor response, the Cushing effect, the Cushing reaction, the Cushing phenomenon, the Cushing response, or Cushing's Law) is a physiological nervous system response to increased intracranial pressure (ICP) that results in Cushing's triad of increased blood pressure, irregular breathing, and a reduction of the heart rate. It is usually seen in the terminal stages of acute head injury and may indicate imminent brain herniation.