Engel-von Recklinghausen syndrome

Description: Also known as: von Recklinhausen disease II von Recklinghausen’s disease of bone Associated persons: Gerhard Engel Friedrich Daniel von Recklinghausen Description: Now mostly historical term for a generalized rarefying bone disorder with skeletal deformation, seen in advanced hyperparathyroidism. It is characterized by cysts or brown tumours in the form of deeply pigmented foci consisting of fibrous scarring of the bone with pseudocysts, haemorrhages, and collection of osteoclasts. There is arthralgia, fractures, bowing of long bones and often gross deformities of the spine and chest.