What Is a Subchondral Bone Cyst? It's a fluid-filled sac that forms in one or both of the bones that make up a joint. They're especially common at the knee or hip. The cysts show up just under the ...

First described in 1942, Stafne bone defects (SBDs), are well-defined, radio-lucent lingual depressions of the lower jaw bone that are asymptomatic and most frequently diagnosed in middle-aged men.

Both arteriovenous malformations and solitary bone cysts can present in the mandible. Mental nerve paraesthesia can be a presenting feature with both types of lesions and diagnosis may be difficult.

A synovial cyst of the spine is a fluid-filled sac that develops along the spine. It may cause pain, tingling, or cramping in the lower back and legs. Treatment may include medications, observation, ...

Medically reviewed by Lauren Schlanger, MD Key Takeaways A ganglion cyst is the most common cause of a lump on your hand or wrist and often feels round or oval. A carpal boss is a hard, bone-like lump ...

Dentigerous cysts are also referred to as follicular cysts of the jaw (FCJ) and they are the commonest of all non-inflammatory jaw cysts. These are benign and slow-growing cysts that are believed to ...