Biomedical subjects
Publications and source records attributed to K H Ho.
A case of migratory abscess pointing both intraorally and extraorally at a considerable distance from the causative site is reported. The anatomy of the area leading to the formation of such an abscess is described.
A placebo effect on post-operative swelling was investigated as a possible model for studying psychological influences on recovery from surgery. 79 patients undergoing removal of impacted third-molars received one of five different procedures shortly after emerging from general anaesthetic. These included dentist-administered or placebo ultrasound (the latter given in two different ways to control for massage effects), untreated controls and a group instructed to apply facial massage to themselves. Pre- and post-operative measurements included trait and state-anxiety, coping style, emotional state, pain, plasma cortisol and facial swelling. Cortisol levels correlated with anxiety and avoidant coping. Post-operative anxiety was negatively correlated with pre-operative arousal. Neither coping nor emotional state was affected by the treatments, but swelling was reduced by a placebo effect of ultrasound. Cortisol levels also responded, apparently to an effect of massage. The coping and emotional factors which we measured here cannot, therefore, explain the effects of this psychological procedure on post-operative recovery.
In the diagnosis of parotid gland tumors, three major questions need to be answered. First, is the mass intra glandular or extraglandular? Second, is it benign or malignant? Third, does it lie deep to or superficial to the facial nerve? Computerized tomography is a relatively new diagnostic technique and when used in conjunction with sialography can provide very useful preoperative information about parotid lesions. A case is presented in which computerized tomography sialography was performed preoperatively in a patient with a parotid gland swelling and greatly assisted in the diagnosis and operative treatment. The technique is described in detail and previous reports of the procedure are reviewed.
A case of inverted papilloma (Ringertz tumour), which presented as a palatal swelling, is reported. The tumour involved the antral and nasoethmoidal complex. An approach to reconstruction of the palate after removal of the tumour is described.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
This paper reviews 30 cases of mandibular ameloblastoma seen and managed in the Singapore General Hospital over a 10 year period from 1976 to 1985 inclusive. Data on age and sex distribution, mode of presentation, presenting symptoms, size of tumour at time of presentation, radiological features at time of diagnosis, method of treatment and post-operative complications are discussed. There was no case of local recurrence in the 28 cases that were surgically managed. The importance of adequate local excision is emphasised. This paper also compares our local data with that of equivalent studies made in Thailand (Far East), Sweden (Europe) and Nigeria (Africa). An interesting rare case of malignant mandibular ameloblastoma is included in this study.
An uncommon disturbance in eruption is reported. The presence of gingival fibromatosis is attributed to retention of the eruption sequestrum.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
The literature on central haemangioma of the jaws has been extensively reviewed. The clinical and radiographic features of central haemangiomas of the jaws and the problems in diagnostic and various modalities of treatment of this lesion are discussed. Central haemangioma of the jaws is rare. Up till 1975, only 53 cases have been reported in the literature. A classical case of central haemangioma of the mandible is presented to illustrate the features of this uncommon disease.