Rothmund-Thomson syndrome (RTS) is a genodermatosis presenting with a characteristic facial rash (poikiloderma) associated with short stature due to pre- and postnatal growth delay, sparse scalp hair, sparse or absent eyelashes and/or eyebrows, juvenile cataracts, skeletal abnormalities, radial ray defects, premature aging and a predisposition to certain cancers. The disease is Monarch Disease Ontology id MONDO_0010002 (Rothmund-Thomson syndrome). Also known as: RTS, congenital poikiloderma, poikiloderma of Rothmund-Thomson.