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Biomedical subjects

R D Hayward

Publications and source records attributed to R D Hayward.

79 records · Page 5Linked to original sources

Intracranial arteriovenous malformations. Observations after experience with computerised tomography.

Thirty-six patients with angiographically confirmed intracranial arteriovenous malformations have had computerised tomographic scans performed as part of their investigation. This study demonstrates the incidence of haematoma formation after haemorrhage, the frequency of calcification not visible on plain radiographs, and describes the possible causes for a complicating hydrocephalus. Further information has been gained from the intravenous injection of sodium iothalamate (Conray 420), with comparison of the scans taken before and after the injection.

Adolescent↗

Malignant melanoma and the central nervous system. A guide for classification based on the clinical findings.

Twenty-seven cases diagnosed as having malignant melanoma affecting the central nervous system have been studied. In 20 patients the tumours represented secondary spread from elsewhere, but there were six who had a primary melanoma either of the spinal cord, leptomeninges, or brain. Confusion exists in the literature about how to differentiate primary from secondary tumours but this suggests several clinical factors which may indicate that the lesion is probably a primary one. This method of categorizing the cases is supported by the differences in duration of symptoms and survival times for each group and a simple classification can therefore be proposed.

Aged↗

The feet in Apert's syndrome.

Apert's syndrome (acrocephalosyndactyly type 1) is characterised by anomalies of the cranium, hands, and feet. The cranial and hand anomalies have been investigated, and the management of these is well established. In contrast, the anomalies affecting the feet and their management has previously received little attention. Forty-three children with Apert's syndrome underwent investigation of the anomalies affecting their feet. This consisted of history, clinical examination, and where possible, radiographic examination to establish the anomalies present, how these altered during development, and their clinical significance. The conclusion of the study is that there are widespread anomalies of the feet, with defects including both predictable dysmorphic changes and progressive fusions of the skeletal components during skeletal maturity. These fusions and their effect on growth combine to produce increasing deformity during childhood. The clinical significance of the anomalies is that walking is often delayed, and the increasing deformity results in difficulty obtaining footwear. This is the most common reason for surgery to the feet being undertaken during childhood to improve the shape of the feet to facilitate the provision of footwear. The unexpectedly high incidence of surgery in this study suggests that the management of foot deformities may require surgery more frequently than current literature would suggest.

Acrocephalosyndactylia↗

The hands in Saethre-Chotzen syndrome.

The hand radiographs of fifteen patients with a diagnosis of Saethre-Chotzen syndrome were reviewed by a radiologist with an interest in skeletal dysplasia along with the craniofacial team. Eleven patients exhibited a range of bone abnormalities of the following sites: thumbs, fingers, metacarpals, and the radius. The epiphysis of the distal phalanx of the thumb was most commonly involved site with 7 of the 15 patients affected. In addition to the structural abnormalities all cases before puberty (14 out of 15 patients in this series) showed variable delay of the bone age.

Acrocephalosyndactylia↗

The feet in Crouzon syndrome.

Eighteen patients with Crouzon syndrome were evaluated for anomalies of the feet. Clinical examination was unremarkable in all cases. Radiographs were evaluated by a radiologist with an interest in skeletal dysplasia, along with the craniofacial team. A range of radiographic anomalies was seen, with the phalanges, metacarpals, and tarsals all displaying anomalies. Only three cases had radiographically normal feet. These findings suggest that the effects on the feet, which, although subtle and not well described in the literature, are notable. Feet anomalies also occur with the other complex craniosynostosis syndromes resulting from mutations of fibroblastic growth factor receptor 2 molecule, such as those of Apert, Pfeiffer, and Jackson-Weiss syndromes.

Adolescent↗