No abstract available.
Dental Porcelain* ; Fatigue* ; Fractures, Stress*

No abstract available.

Lymphangioma is composed of lymphatic tissue and filled with clear or chylous fluid that develops most often in the skin and subcutaneous tissue of neck but relatively rare in extremities. It is perhaps a congnital malformation rather than a true neoplasm, and so most of these lesions are usually present at birth and have a tendency to grow very slowly. If it is developed with a cavernous type of lymphangioma, it will have more aggressive and infiltrative tendency because their margin is usually adhesive with adjacent normal tissue. A case of cavernous lymphangioma on the right wrist of an eight month old female infant, treated by surgical excision is followed up over one year and presented here with a review of the literature.
Adhesives ; Extremities ; Female ; Humans ; Infant ; Lymphangioma ; Lymphoid Tissue ; Neck ; Parturition ; Skin ; Subcutaneous Tissue ; Wrist

No abstract available.
Humans ; Spine*

PURPOSE: The purpose of this study was to evaluate the diagnostic accuracy of [18F]FDG PET in the diagnosis of recurrent head and neck cancer after the completion of surgery and radiotherapy in patients with head and neck cancers. MATERIALS AND METHODS: In fifty-nine patients with head and neck cancers, whole body [18F]FDG PET studies were performed. According to the different therapeutic modalities, patients were divided into four groups (Group I; pre-treatment, Group II; surgery, Group III; radiotherapy, Group IV; both surgery and radiotherapy). [18F]FDG PET images were compared with clinical, CT and histopathologic findings. RESULTS: For detection of metastatic lymph nodes in 14 patients of pre-treatment group (group I), the sensitivity and specificity of PET were 100% (10/10) and 75% (3/4), and those of CT were 80% (8/10) and 100% (4/4). For detection of recurrence in 45 patients of post-treatment group, overall sensitivity and specificity of PET were 96.2% (25/26) and 78.9% (15/19) [(100% and 75% in group II, 80% and 50% in group III, and 100% and 100% in group IV)] without significant difference from pre-treatment group (p>0.1). In detecting recurrence, the sensitivity and specificity of [18F]FDG PET were 90.9% (10/11) and 20% (1/5) in 16 patients who underwent [18F]FDG PET within 2 months after the completion of treatment. The specificity of these patients was significantly lower than that of 29 patients (100% of sensitivity and specificity) who underwent [18F]FDG PET 2 months after treatment (p<0.05). CONCLUSION: [18F]FDG PET is an accurate diagnostic modality for the detection of recurrence in head and neck cancer. Post-therapy [18F]FDG PET should be obtained at least 2 months after the completion of surgery or radiotherapy.
Diagnosis ; Head and Neck Neoplasms ; Head* ; Humans ; Lymph Nodes ; Neck* ; Radiotherapy* ; Recurrence ; Sensitivity and Specificity

Amniotic fluid embolism (AFE) is a rare but devasting obstetric emergency. We experienced a case of AFE during dilatation and curettage (D & C) in a 15 2/7 weeks pregnant woman, age 30, who was diagnosed as having a missed abortion. Sudden rapid hypoxemia, low SpO2, hypotension, low PETCO2, high CVP, and tachycardia, right axis deviation and right bundle branch block in 12 leads ECG were developed during D &C under general anesthesia, and signs of disseminated intravascular coagulation (DIC) followed after the operation, which are consistent with the findings of AFE. Even though there was no definite pathologic and radiologic confirmation of AFE, laboratory findings showed 100 times higher level of alpha-fetoprotein in her central venous blood than same weeks of missed abortion woman's blood. Though it is rare, the anesthesiologist should always suspect the possibility of AFE, when the patient shows an unexplained collapse, cyanosis, low PETCO2, high CVP, low SpO2, ECG change and DIC during any kind of obstetric procedure.
Abortion, Missed ; alpha-Fetoproteins ; Amniotic Fluid* ; Anesthesia, General ; Anoxia ; Axis, Cervical Vertebra ; Bundle-Branch Block ; Cyanosis ; Dacarbazine ; Dilatation and Curettage* ; Dilatation* ; Disseminated Intravascular Coagulation ; Electrocardiography ; Embolism, Amniotic Fluid* ; Emergencies ; Female ; Humans ; Hypotension ; Pregnancy ; Pregnancy Trimester, Second* ; Pregnant Women ; Tachycardia

Many kinds of membrane have been used for the guided bone regeneration (GBR) technique. However, most membranes do not fulfill all requirements for the ideal membrane for the GBR technique. Among them, collagen membrane has been most widely used. However, its high price and weak tensile strength in wet condition are limitations for wide clinical application. Synthetic polymers have also been used for the GBR technique. Recently, silk based membrane has been considered as a membrane for the GBR technique. Despite many promising preclinical data for use of a silk membrane, clinical data regarding the silk membrane has been limited. However, silk based material has been used clinically as vessel-tie material and an electrospun silk membrane was applied successfully to patients. No adverse effect related to the silk suture has been reported. Considering that silk membrane can be provided to patients at a cheap price, its clinical application should be encouraged.
Bone Regeneration* ; Collagen ; Humans ; Membranes* ; Polymers ; Silk ; Sutures ; Tensile Strength

No abstract available.
Aneurysm*

PURPOSE: Malignant glaucoma is a rare complication of anterior segment surgery. The authors present a case of a malignant glaucoma-like phenomenon during cataract surgery in a primary open-angle glaucoma (POAG) patient. CASE SUMMARY: A 74-year-old man with POAG underwent a cataract surgery in his left eye. After phacoemulsificiation, sodium hyaluronate was used to form the capsular bag for intraocular lens implantation. Following this procedure, the capsular bag space and anterior chamber became shallow. Intraocular pressure (IOP) elevated, and the shallowing of the anterior chamber and capsular bag space continued to a dangerous level. The surgical procedure was stopped and postponed for two days. After two days, IOL was successfully implanted in the posterior bag. CONCLUSIONS: Although the preoperative ophthalmologic examination failed to reveal a zonular problem, there was a possibility for a small area of zonular defect. A malignant glaucoma-like phenomenon was suspected to have occurred due to leakage of sodium hyaluronate or balanced salt solution into the vitreous through a small area of zonular dialysis. If a similar condition, occurs delayed surgery for IOL implantation would be more effective than vitrectomy or laser treatment.
Aged ; Anterior Chamber ; Cataract ; Dialysis ; Eye ; Glaucoma ; Glaucoma, Open-Angle ; Humans ; Hyaluronic Acid ; Intraocular Pressure ; Lens Implantation, Intraocular ; Vitrectomy

A new fluorinated benzodiazepine compound Ro 5-4200 was used for induction in 58 surgical patients to evaluate the possibility of an intravenous anesthetic induction agent (Table 2 and 3). The hypnotic properties as well as respiratory, cardiovascular, muscle relaxant and local effects were observed. 1. Ro 5-4200 in doses of 2mg was slowly injected intravenously to adult patients (body weight ; 54.2+/-10.3 kg) and 1 mg to a child (body weight; 22 kg, 5 yr.) (Table 2). The tim between the start of injection and the loss of consciousness was 110.3"+/-68.6", taken from the beginning of the injection until the patient was asleep and eyelash and corneal reflexes abolished. Sleep did not occur in 2 patients (Table 4). 2. But the time to sleep after the injection varied remarkebly according to the dilution of the drug. When the dose of 2 mg of the drug was injected, undiluted directly to the small vein, the time to sleep was 83.2"+/-31.4" and 69.1"+/-31.4"; in the former case the patients complained of pain along the injected vein and the latter did not. 3. The hypnotic time with the diluted solution of the drug was 144.5" +/-4.6" and 117.3"+/-77.8", in which the former complained of pain during injection, and the latter did not. 4. Blood pressure, pulse rate and respiratory rate were measured immediately prior to induction and again 2 and 5 minutes after induction. A slight but insignificant rise in blood pressure with a mean of 3.4% in systolic and 6.7% in diastolic pressure above control value was observed in 2 minutes after injection. And at 5 minutes there was a significant fall in blood pressure, 11.3% and 4.3% respectively (p<0.05) (Table 5). 5. Pulse rate increased significantly by 12.7 beats (14.2%) a minute in 2 minutes after injection and 15.7 beat (17.5%) a minute in 5 minutes after injection from a control level of 89.6 (p<0.01) ,(Table 6). 6 Respiration became shallower and the rate decreased as the patients fell asleep. Apnea occurred in 4 patients (6.9%). In the apnea cases, respiration was controlled by mask and positive pressure ventilation. It needed that the facilities for positive pressure ventilation be available in case apnea develops. 7. During induction, tremors, abnormal muscle movements, and laryngospasm were not observed. Hiccough was observed in 4 cases (6.9%). Hiccugh had the tendency to recur during intra-abdominal procedure. 32 patients (55.0%) had an antegrade amnesia, that is shortly before the injection of the drug. They did not remember being moved to the operating table or the insertion of the injection needle. 8. Ro 5-4200 caused pain on injection when given undiluted directly into a small vein on the dorsum of the hand, and the pain was also complained of even when the drug was diluted to 5 times with normal saline or intravenous drip infusion. A localized thrombophlebitis was not seen. 9. Laryngeal reflexes were retained on induction but endotracheal intubation was tried successfully without muscle relaxant in three cases. In this procedure the patients tended to be awake and showed some resistance. The help of muscle relaxants in intubation is recommended. As to degree of everity and nature of muscle fasciculation after succinylcholine, there was somewhat delayed appearance but degree was not altered by Ro 5-4200 10. Recovery from anesthesia and reversal of muscle relaxation was unaltered. The induction was satisfactory, but slow, and characterized by minimal change in blood pressure, pulse rate and respiration. Because of this delayed induction time and the varied degree of depth of sleep, the agent seemed to be improper as an intravenous induction agent. Acknowledgements: Samples of Ro 5-4200 have been kindly supplied by Hoffmann La Roche, Hong Kong. The authors wish to thank Dr. S.S.Lo and Dr. P.A. Bulhr of Roche Products Ltd., for their assistance and advice.
Adult ; Amnesia ; Anesthesia ; Apnea ; Benzodiazepines* ; Blinking ; Blood Pressure ; Child ; Fasciculation ; Flunitrazepam* ; Hand ; Heart Rate ; Hiccup ; Hong Kong ; Humans ; Infusions, Intravenous ; Intubation ; Intubation, Intratracheal ; Laryngismus ; Masks ; Muscle Relaxation ; Needles ; Operating Tables ; Positive-Pressure Respiration ; Reflex ; Respiration ; Respiratory Rate ; Succinylcholine ; Thrombophlebitis ; Tremor ; Unconsciousness ; Veins