Purpose or Case Report: Precocious puberty is defined as development of secondary sex characteristics before the age of 8 years in girls and 9 years in boys. Two types of precocious puberty have been recognized: central (CPP) and peripheral (PPP). The central precocious puberty is further divided into idiopathic or organic types. CNS imaging is indicated if CPP is diagnosed in boys at any age or in girls younger than 6 years.

Different structural abnormalities are associated with CPP such as Hypothalamic hamartoma, Hypothalamic astrocytoma, germ cell tumors or suprasellar arachnoid cysts.

The goals and objectives of the current presentation are as follow:

1- To briefly review the pathophysiology, clinical presentation and different types of CPP

2- To review the indications for CNS imaging work-up in children with CPP and to discuss the appropriate imaging modality and imaging protocol

3- To review different brain pathologies that are associated with CPP followed by discussion of main imaging characteristics through an interactive case series
Methods & Materials: Review of the current literature and retrospectively research in our PACS database for patients scanned with clinical concern for central precocious puberty. Illustrative cases will be chosen and anonymized.
Results: The exhibit will provide a brief review of the causes of central precocious puberty. Then, suggestions for dedicated imaging protocols will be provided, followed by an interactive series of illustrative cases of CPP. Finally, a summary will be available for the viewer in quiz format.
Conclusions: This exhibit will allow the viewer to review the causes of CPP, understand why and when to scan those patients as well how to best use their imaging resources. After reviewing the interactive case series, the viewer will learn the imaging characteristics of the most common CPP pathologies and will be better equipped to identify these lesions in their work routine.