👉 The term "leptocephaloid" is a medical term that refers to a type of bone cyst or mass, typically located in the head, neck, and mid-back. These cysts are often associated with conditions such as osteoarthritis of the spine, which can cause pain, stiffness, and movement problems due to compression of the spinal cord. The condition is also known as "osteochondroma" or "bone cyst," although it differs from other types of bone cysts in