Summary
Diaphyseal Medullary Stenosis with Malignant Fibrous Histiocytoma (Hardcastle's syndrome) is a rare, autosomal dominant bony dysplasia characterized by symmetric diaphyseal medullary stenosis of long bones and a very high risk of development of Malignant Fibrous histiocytoma.
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Hardcastle's syndrome is a rare, autosomal dominant bony dysplasia characterized by symmetric diaphyseal medullary stenosis of long bones and a very high risk of development of Malignant Fibrous histiocytoma.
The authors of this site, in cooperation with Dr. Martignetti, have an interest in this disorder. If you or your family member is affected by this disorder, please contact the authors of this site.
This rare disorder has been reported in four or five families worldwide. It is inherited as an autosomal dominant trait. Characteristic findings become visible on radiographs in early adult years. Transformation into Malignant Fibrous histiocytoma occurs in approximately 35 percent. Insufficiency fractures can occur in affected long bones. Following treatment, healing is slow and nonunion may result.
The authors have experience with affected individuals from two of the five known families. One individual has suffered traumatic fractures of the femur and tibia. Although the involved bone appears very dense on plain radiographs, the bone is more likely to fracture than normal bone.
Bone scan does not show abnormal uptake in all affected areas, and uptake in areas of recent fracture is much more modest than expected.
CT scan shows the densification of the medullary space and confluent striations.