Learner's definition of DITHER. [singular] informal. : a very nervous, confused, or excited state â usually used in the phrase in a dither. They're in a dither over what to do next. The news of his arrival had us (all) in a dither.
Hepatectomy is the surgical resection (removal of all or part) of the liver. While the term is often employed for the removal of the liver from a liver transplant donor, this article will focus on partial resections of hepatic tissue and hepatoportoenterostomy. 1  1 History.  2 Indications.
Hemispherectomy is a very rare neurosurgical procedure in which one cerebral hemisphere (half of the brain) is removed, disconnected, or disabled. This procedure is used to treat a variety of seizure disorders where the source of the epilepsy is localized to a broad area of a single hemisphere of the brain, notably Rasmussen's encephalitis. About one in three patients with epilepsy will continue to have persistent seizures despite epileptic drug therapy.