Hypertrophic Riedel's lobe of the liver

Riedel's lobe, noted on 99mTc-sulfur colloid liver scintigraphy, was present in 86 (3.3%) of 2604 patients reviewed. Hypertrophied Riedel's lobe was found in 30 cases of which 25 (83%) were females and 5 (17%) were males. Liver scintigraphy will detect the presence of a hypertrophied Riedel's lobe and is recommended in all cases of right sided abdominal masses.     

BPM红外偏振光治疗仪临床物理传播特性

简要介绍了光产生的基本原理和BPM红外偏振光的物理医学特性。     

Mandibular ameloblastoma: clinical experience and literature review

Background: Ameloblastoma is a locally aggressive odontogenic tumour of the mandible and maxilla that, if neglected, can cause severe facial disfigurement and functional impairment. A thorough understanding of its clinicopathological behaviour is essential to avoid recurrence associated with inadequately treated disease. Currently, wide resection and immediate reconstruction is the treatment of choice in most cases of mandibular ameloblastoma. We present our experience in the management of this disease and review the current status of the literature. Method: Retrospective review of all patients between 1996 and 2006 with histologically confirmed ameloblastoma. A literature review on the current understanding of this disease and its management is then presented. Results: Six patients were identified, ranging between 23 and 54 years old. All were females. Two tumours involved the angle and posterior body of the mandible, one the angle and ramus, one the body and two the anterior mandibular. Four patients underwent mandibular reconstruction with free tissue transfer and two by non‐vascularized bone grafts. All procedures were successful. One patient developed deep vein thrombosis requiring anticoagulation. Another developed a collection at the mandibular surgical site requiring drainage. Satisfactory union was achieved in all cases with no evidence of recurrence. All patients had adequate cosmesis, masticatory efforts and speech. Conclusion: Management of ameloblastoma remains a challenge and requires a thorough understanding of the behaviour of its different clinicopathological variants. We have found segmental mandibulectomy and immediate reconstruction to be an excellent treatment option in our series of patients.     

Choroid metastasis from nasopharyngeal carcinoma

A case of choroid metastasis from nasopharyngeal carcinoma (NPC) is presented. If loss of vision in patients with NPC is not associated with proptosis or weakness of the extra-ocular eye muscles after radiotherapy, investigations to exclude choroid metastasis should be carried out. Choroid metastasis, in contrast to the more common causes of loss of vision in such a situation, radiation retinopathy and optic neuropathy, is amenable to treatment to prevent irreversible blindness and enucleation for intractable glaucoma pain.     

Radical neck dissection in nasopharyngeal carcinoma.

We report a series of 37 patients who had radical neck dissection for residual or recurrent lymph node metastasis from nasopharyngeal carcinoma after radiotherapy. The operation was performed despite high doses of pre-operative radiotherapy. There was no operative mortality and the morbidity was 13% (2 prolonged chylous drainage, 3 sloughing of neck flap). The risk of sloughing of neck flap was significantly related to previous lymph node biopsy, which should be avoided if at all possible. In 35% of patients, the lymph node was densely adherent to neighbouring structures. In the 28 patients who had single lymph node clinically, 29% had multiple neck node involvement noted during operation; another 14% were documented only on histological examination. Radical neck dissection rather than excision alone is justified for the clinically solitary lymph node.     

Blood pressure and 40 month mortality in elderly Chinese subjects aged 70 years and over.

The association between blood pressure and 4 year mortality was examined in a cohort of 970 Chinese subjects aged 70 years and above. After adjusting for age, sex, body mass index, smoking habit, place of residence, and the presence of heart or chronic lung diseases, a U-shaped association between blood pressure and mortality was observed, the risks of mortality among subjects in the extreme quartiles being twice as high as those in the middle quartiles. Subjects with the lowest systolic blood pressure quartile also had a higher risk of developing functional limitations.