No abstract available.
Epithelial Cells* ; Maxillary Sinus* ; Mucous Membrane*

No abstract available.

No abstract available.
Infectious bursal disease virus*

To our knowledge, MR findings of neuroshistosomiasis has not been reported in Korea. A case of neuroshistosomiasis involving cerebellum and presumably spinal cord is reported. A 40 year old man who had lived in Middle East complained of low back pain and progressive paraparesis for 6 months, and subsequently developed headache, dizziness and diplopia. On cervical spine MRI, there was diffuse enlargement of cervical cord with increased signal intensity on T2 weighted image and nodular heterogenous enhancement after Gd-DTP^ administration. Brain MR imaging obtained 4 months later showed ill-defined, irregularly enhancing heterogenous mass in cerebellar vermis which was proved to be a granulomatous lesion containing shistosomiasis mansoni ova.
Adult ; Brain ; Cerebellum ; Diplopia ; Dizziness ; Granuloma* ; Headache ; Humans ; Korea ; Low Back Pain ; Magnetic Resonance Imaging* ; Middle East ; Myelitis, Transverse* ; Neuroschistosomiasis* ; Ovum ; Paraparesis ; Spinal Cord ; Spine

No abstract available.

Examination is indispensable to medical education. It qualifies medical education, drives medical students to study hard, and provides guides for the students acquiring a large amount of medical knowledge. This study provides an approach to organize the question pool for medical examination. In this approach, many questions in the form of HTML based texts were stored and managed in text-and memo-type field of Microsoft Access database system. They could be retrieved from the database in computer-generated HTML file, which could be read in word processors and web browsers. Several advantages of HTML bases text were emphasized. Though they are essentially text format data which can be stored and processed easily in text-type field of databases, they don't lose character attributes such as bold, italic, underlined, superscript, subscript and so on. Also they can provide table facility and links to external graphic files. This approach can be applied in other medical information retrieval system.
Education, Medical ; Humans ; Information Systems ; Students, Medical ; Web Browser

No abstract available.
Contrast Media* ; Endothelium*

BACKGROUND: Many studies on the outcome of endoscopic sinus surgery(ESS) reported that patients' symptoms were much improved but surgeons were not so satisfied with endoscopic and radiologic findings postoperatively. One of the reasons may be that it is hard to manage diffuse poyposis(DP) within the maxillary sinus(MS) sufficiently with preexisting techniques. OBJECTIVES: The aim of this study is to introduce a new surgical technique of managing DP and antrochoanal polyp(ACP) within MS using a microdebrider in ESS and to evaluate the surgical outcome with our preliminary results prospectively. MATERIALS AND METHODS: Symptoms, endoscopic and computed tomographic(CT) findings were evaluated in 10 patients with 18 MS's with the mucosa showing DP and six ACP patients, who underwent ESS and were followed up over six months after surgery in our department from November, 1995 through October, 1996. RESULTS: Of the patients with DP, 88.9%, 77.8% and 75.0% reported an improvement in symptoms of nasal obstruction(NO), rhinorrhea and postnasal drip(PND) respectively, and endoscopic and CT findings were improved in 77.8% and 88.9% of the 18 MS's with DP. Improvement in NO, rhinorrhea and PND was observed in 100.0%, 100.0% and 80.0% of the six ACP patients respectively, and both endoscopic and CT findings were improved in 100.0% of the six MS's with ACP. CONCLUSION: This surgical technique using a microdebrider is effective in management of DP and ACP within MS's in ESS.
Humans ; Maxillary Sinus* ; Mucous Membrane ; Polyps* ; Prospective Studies

BACKGROUND AND OBJECTIVES: The aims of the current study are to reintroduce a surgical technique for endoscopic removal of the antral portion of antrochoanal polyp (ACP) by powered instrumentation and to determine its efficacy by evaluating the outcome of the patients. MATERIALS AND METHOD: A prospective study was performed in 28 patients undergoing endoscopic sinus surgery for ACP by the author's surgical technique. Improvements of clinical symptoms and endoscopic and computed tomographic findings were evaluated postoperatively with a follow-up period ranging from 12 to 52 months. All symptom scores on a 100 mm visual analog scale before operation were compared with those obtained at the last visit after operation. Postoperative endoscopic and computed tomographic findings were graded using a three-point scale ranging from 0 to 2. In the surgical technique, the antral portion of ACP was identified through the enlarged ostium under intranasal endoscopy and removed by a blade of powered instrumentation that was inserted through the canine fossa. RESULTS: Symptom scores were all significantly reduced postoperatively. All but one patient showed improvement in clinical symptoms and endoscopic and computed tomographic findings during the follow-up period. There were no major complications specific to this technique. CONCLUSION: This technique provides an attractive alternative to other methods for removing the antral portion of ACP and is associated with excellent outcomes and the minimal morbidities rate.
Endoscopy ; Follow-Up Studies ; Humans ; Polyps* ; Prospective Studies ; Visual Analog Scale

BACKGROUND AND OBJECTIVES: Identification of the natural ostium verifies the safest entry to the sphenoid sinus (SS) in endoscopic sinus surgery (ESS). In order not to destabilize the middle turbinate (MT), new techniques have recently been introduced on transethmoid approaches to the SS ostium after ethmoidectomy. The aims of this study are to introduce an intranasal transethmoid approach to the SS ostium for sphenoidotomy using the superior turbinate (ST) as a key landmark without destabilization of the MT in ESS for chronic sinusitis with concurrent sphenoiditis and to determine its efficacy by evaluating the outcome of the patients. MATERIALS AND METHODS: Fifty-three chronic sinusitis patients (37 males and 16 females, aged 14 to 63 years) with concurrent sphenoiditis in one or both SSs and their 75 SSs were included in this study. Sphenoidotomy was performed in all patients. The SS ostium was identified just medial to the ST remnant. Number of SSs where the ostium was identified was determined, and surgical complications were evaluated. To assess olfactory changes, a butanol threshold test was performed before and after the surgery. RESULTS: The SS ostium was identified in 73 (97.3%) of the 75 SSs. The preoperative threshold (3.9+/-3.0) in the butanol test significantly improved to 5.1+/-2.5 after the operation in the 75 nasal sides. Olfactory function of only 3 (4.0%) sides worsened after surgery. There were no major complications in all patients. Conclusion: This technique may be an effective and safe approach to the SS ostium in ESS for chronic sinusitis with concurrent sphenoiditis without destabilization of the MT.
Female ; Humans ; Male ; Sinusitis ; Sphenoid Sinus* ; Turbinates*