Bannayan-Zonana syndrome
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Synonyms and keywords: Bannayan-Riley-Ruvalcaba syndrome
Overview
Bannayan-Zonana syndrome is a rare hamartomatous disorder with occurrence of multiple subcutaneous lipomas, macrocephaly and hemangiomas.
Pathophysiology
The disease is inherited in an autosomal dominant form, but sporadic cases have been reported. The disease belongs to a family of hamartomatous polyposis syndromes, which also includes Peutz-Jeghers syndrome, juvenile polyposis and Cowden syndrome.
Natural History, Complications, and Prognosis
Most lesions of BZS are slowly growing and easily resectable. Visceral as well as intracranial involvement may occur in rare cases, and can cause bleeding and symptomatic mechanical compression, especially of the spinal cord or spinal nerve roots. This may require surgical resection.
Diagnosis
Physical Examination
The macroencephaly of BZS is symmetrical, and does not cause widening of the ventricles or raised ICP (intracerebral pressure).