A true permeative process of bone (or moth-eaten appearance in bone) describes multiple small endosteal lucent lesions or holes, often with poorly defined margins, with sparing of the cortex. It is a bone marrow process. The term 'moth-eaten' d.
A Charcot joint (also known as a neurotrophic joint) refers to a progressive degenerative / destructive joint disorder in patients with abnormal pain sensation and proprioception. Mnemonic - 6 Ds dense bones (subchondral sclerosis) degeneration destruction of articular cartilage deformity (pencil-point deformity of metatarsal heads) debris (loose bodies) dislocation http://radiopaedia.org/articles/charcot-joint
Apophyseal avulsion fractures are usually the result of a sudden forceful concentric or eccentric contraction of the muscle attached to the apophysis. Avulsion fractures of the pelvis are most common in young athletes due to the discordance betw.
Primary CNS lymphoma (PCNSL) are uncommon tumours, accounting for only of malignant CNS tumours. By definition, there is no co-existing systemic disease at the time of diagnosis, distinguishing it from CNS involvement from systemic lymphoma (s.