The craniocervical or craniovertebral junction (CVJ) is an important complex transitional region that needs to be evaluated both anatomically and radiologically separately from the cranial and cervical spine. Advances in the field of medical imaging have enabled more accurate diagnoses for pathologies of important areas such as CVJ and facilitated patient follow-up. In addition to understanding the pathophysiology of the aforementioned hindbrain pathologies, knowing the embryological region development paved the way for more effective treatment approaches. It is necessary to examine the embryological development processes in order to better understand these formations and organization. On the other hand, knowledge of this issue can also help distinguish developmental anomalies from normal variations.