|
| bifurcated ribs | Basal Cell Nevus syndrome |
| chondrodysplasia punctata | Conradi-Hunerman syndrome (= XD type) |
| jaw osteomas | Gardner’s syndrome |
| lobster claw deformity (oligodactyly) | Goltz syndrome |
| odontogenic keratocysts | Basal Cell Nevus syndrome |
| osteopoikilosis | Bushcke-Olendorf |
| posterior iliac horns | nail-patella syndrome |
| sphenoid wing dysplasia | Neurofibromatosis I |
| lytic bone lesions in the clavicles | acne fulminans |
(“inflammatory osteomyelitis” – not infectious)
| “punched out” skull defects | Letterer-Siwe disease |
| polyostotic fibrous dysplasia | McCune-Albright syndrome |
| enchondromas | Mafucci’s syndrome |
(15-20% will develop into chondrosarcomas)
| absent/hypoplastic thumbs, radius | Rothmund-Thomson syndrome |
| “opera glass fingers” | multicentric reticulohistiocytosis |
Soft tissue and bony (limb) hypertrophy ddx:
| • | Proteus syndrome (characteristic plantar hyperplasia) |
| • | Klippel-Trenauny-Webber syndrome |
Cartilage
| • | enchondromas (15-20% will develop into chondrosarcomas) - Mafucci’s syndrome |
| • | relapsing polychondritis |
| • | chondrodermatisis nodularis helicis |
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