Ectromelia is a congenital condition where long bones are missing or underdeveloped. Examples include:

Amelia
Hemimelia
Phocomelia
Sirenomelia

References


== External links ==
They should look for symptoms referable to other potentially involved systems: the CNS, the genitourinary system, the cardiovascular system, and dentition.Genetic counseling is advised for prospective parents, since one parent with NBCCS causes a 50% chance that their child will also be affected. Treatment
Treatment is usually supportive treatment, that is, treatment to reduce any symptoms rather than to cure the condition. Enucleation of the odontogenic cysts can help, but new lesions, infections and jaw deformity are usually a result. The severity of the basal-cell carcinoma determines the prognosis for most patients. BCCs rarely cause gross disfigurement, disability or death [2]. Genetic counseling

Incidence
NBCCS has an incidence of 1 in 50,000 to 150,000 with higher incidence in Australia. One aspect of NBCCS is that basal-cell carcinomas will occur on areas of the body which are not generally exposed to sunlight, such as the palms and soles of the feet and lesions may develop at the base of palmar and plantar pits. One of the prime features of NBCCS is development of multiple BCCs at an early age, often in the teen years. Each person who has this syndrome is affected to a different degree, some having many more characteristics of the condition than others. See also
List of cutaneous conditions
List of radiographic findings associated with cutaneous conditions
List of dental abnormalities associated with cutaneous conditions
List of cutaneous conditions associated with increased risk of nonmelanoma skin cancer

References
External links

GeneReviews/NCBI/NIH/UW entry on Nevoid Basal Cell Carcinoma Syndrome
GeneReviews/NCBI/NIH/UW entry on 9q22.3 Microdeletion
US National Library of Medicine page