Cervical myelopathy in hereditary multiple exostoses.

Spinal cord compression due to cervical exostoses is a rare but recognized complication of hereditary multiple exostosis (HME), an autosomal dominant disorder. This disease, also called multiple osteochondromatosis, is characterised by osteocartilaginous exostoses, typically involving the juxtaepiphyseal regions of long bones. Complications such as transformation to sarcoma (1 to 5%) or neurological compression (of the spinal cord, 1 to 9%) can arise during the course of the disease. We report the case of a 64-year-old man with progressive difficulties in walking over many years, ascribed to congenital rachitism. A diagnosis of HME was not made until late in the disease course. Investigations revealed cervical myelopathy due to vertebral exostosis as well as multiple exostoses in other sites. His gait was not improved after surgical decompression. A better knowledge of this disease could have prevented this neurological complication.

Synovial chondromatosis of the shoulder: imaging findings

Synovial chondromatosis is a benign condition characterized by synovial proliferation and metaplasia, with development of cartilaginous or osteocartilaginous nodules within a joint, bursa or tendon sheath. In the shoulder, synovial osteochondromatosis may occur within the glenohumeral joint and its recesses (including the tendon sheath of the biceps long head), and in the subacromial-deltoid bursa. Such condition can be identified either by radiography, ultrasonography or magnetic resonance imaging, showing typical features according to each method. Radiography commonly shows ring-shaped calcified cartilages and periarticular soft tissues swelling with erosion of joint margins. Ultrasonography demonstrates hypoechogenic cartilaginous nodules with progressive increase in echogenicity as they become calcified, with development of posterior acoustic shadow in case of ossification. Besides identifying cartilaginous nodules, magnetic resonance imaging can also demonstrate the degree of synovial proliferation. The present study is aimed at describing the imaging findings of this entity in the shoulder.

Osteocondromatose múltipla hereditária com envolvimento costal

This is a case report on Hereditary Multiple Osteochondromatosis (HMO) with rib involvement. The authors present aspects of thoracic surface anatomy, and thoracic images (X-rays, computed tomography, magnetic nuclear resonance), as well as the operating procedure.

Osteocondromatose múltipla hereditária com envolvimento costal

This is a case report on Hereditary Multiple Osteochondromatosis (HMO) with rib involvement. The authors present aspects of thoracic surface anatomy, and thoracic images (X-rays, computed tomography, magnetic nuclear resonance), as well as the operating procedure.

Hemilaminectomia no tratamento de osteocondromatose vertebral em gato

O termo osteocondromatose refere-se a anormalidades proliferativas benignas de tecido cartilaginoso que acomete ossos de origem endocondral. Esta condição pode ser solitária ou múltipla e, neste último caso, é referida como exostose múltipla cartilaginosa (EMC). em felinos, é caracterizada pelo surgimento em animais adultos e por apresentar desenvolvimento progressivo. A osteocondromatose pode ser silenciosa e o paciente poderá apresentar sinais clínicos quando o desenvolvimento das exostoses resultar em compressão de estruturas vitais, como a medula espinhal. em felinos, a enfermidade não possui tratamento conhecido devido ao seu caráter recidivante. Este trabalho relata o êxito da aplicação de hemilaminectomia no tratamento de osteocondromatose vertebral em gato.