Trichorhinophalangeal Syndrome

Trichorhinophalangeal syndrome (TRPS) is the collective name of three rare congenital conditions characterised by craniofacial and skeletal abnormalities. The three known types of TRPS have different modalities of genetic transmission: namely, TRPS I and III are inherited as an autosomal dominant disease, while the cases of TRPS II are essentially sporadic. The diagnosis of the different types of TRPS is based on clinical and radiological findings, eventually integrated by genetic analysis, particularly useful in some cases with the non-classical clinical presentation. Alopecia and structural abnormalities of the nose and the hands should be considered as clinical hallmarks, whereas endocrine disorders, renal alterations, ureteral reflux, heart pathology and bone dysplasia have been documented, in the setting of a multisystem involvement.