Table I. Diseases related to ciliary defects.

Defects in motile cilia	Defects in primary cilia
Symptoms	Symptoms
Respiratory tract infections,     bronchiectasis, sinusitis,     male infertility, situs inversus,     hydrocephalus	Cysts in kidney, liver, pancreas;     polycystic kidney disease;     nephronophthisis;     type 2 diabetes
	Sensory defects
	Retinal degeneration,     anosmia (loss of smell),     hearing impairment
Syndromes	Neurological disorders
Primary ciliary dyskinesia,     Kartagener's syndrome,     Siewert syndrome	Neural tube closure and     neural patterning defects,     hydrocephalus, juvenile myoclonic epilepsy,     cognitive disorders
	Other
	Polydactyly, obesity,     urological dysfunction, situs inversus
	Syndromes
	Bardet-Biedl syndrome, Meckel-Gruber syndrome,     Von Hippel Lindau disease, Loken-Senior syndrome,     Alstrom syndrome