<unk>  is an orphan disease where the patients share five characteristics from which the acronym is derived: telangiectasias, elevated erythropoietin and erythrocytosis, monoclonal gammopathy, perinephric fluid collection, and intrapulmonary shunting.
TEMPI syndrome
SUNCT syndrome
Bogart–Bacall syndrome
EAST syndrome
3C syndrome
RIDDLE syndrome
MASA syndrome
TAN syndrome