No abstract available.
Infant, Newborn ; Meconium Aspiration Syndrome* ; Meconium* ; Mortality ; Suction*

PURPOSE: To illustrate frequently encountered anatomic variations on PNS computed tomography(CT) and to assess their clinical significance. MATERIALS AND METHODS: CT findings of 1523 patients, who underwent PNS CT with no history of sinus surgery, were reviewed, and prevalence of each anatomic variation and its relationship with mucociliary clearance pathway was evaluated. RESULTS: Two categories of anatomic variations were encountered. The first group included variations of the turbinates, such as concha bullosa(28.6% ), paradoxical middle turbinate(31.5%), of the uncinate process, such as medially bent or folded(36.3%), laterally bent(3.7%) or uncinate bulla(0.5%), of the ethmoidal sinus, such as Haller's ce11(28.2%), large agger nasi ce11(9.6%) or large ethmoidal bulla(23.5%) and nasal septal deviation(24. 1%), which might cause obstruction of mucociliary clearance pathway and thus give rise to secondary obstructive sinusitis. The second group included Onodi ce11(1.4%) and medial depression of the lamina papyracea (3.5%), which were not related with obstructive sinusitis. 87 cases of large agger nasi cell were associated with obstruction of nasofrontal recess. Large ethmoidal bulla(452 cases), Haller's ce11(245 cases) and true concha bullosa (25 cases) contributed to narrowing of the infundibulum. Medially bent uncinate process(220 cases), concha bullosa(157 cases), paradoxical middle turbinate(126 cases) and nasal septal deviation(93 cases) were observed in middle meatal obstruction and supreme concha (3 cases) accompanied sphenoethmoidal recess obstruction. CONCLUSION: Recognition of anatomic variations on PNS CT is important to build a treatment plan in patients with obstructive sinusitis as they may represent causes of the disease, and to avoid critical complications during functional endoscopic sinus surgery.
Anatomic Variation ; Depression ; Humans ; Mucociliary Clearance ; Prevalence ; Sinusitis ; Turbinates

PURPOSE: The purposes of this article are to identify CT findings distinguishing nasal polyps, that are the most common cause of the nasal polypiod lesions, from other nasal cavity masses and to identify differential points between benign and malignant masses of nasal cavity. MATERIALS AND METHODS: We classified 567 cases of pathologically proved nasal cavity masses into 4 different groups on CT according to the sites of origin and surrounding bone changes. RESULT: The nasal polyps were the most common cause of nasal cavity masses(515/567). Group I had a high diagnostic specificity for the nasal polyps (513/515, 99.6%) although inverted papilloma (8/522) and malignant melanoma(1/522) showed similar CT appearances. The representitive nasal mass of Group Ila was the inverted papilloma (15/24, 66.5% of the inverted papilloma). Group III pattern was seen in 3 cases of benign minor salivary gland tumor and 2 cases of pyogenic granuloma. Group IV suggested malignancy and thus was mostly observed in malignant tumors except I case of inverted papilloma and 1 case of granulomatous necrosis. CONCLUSION: The differential diagnosis between nasal polyps and the other nasal cavity masses is possible by characteristic bone changes and their sites of origin revealed on CT. In addition, it is possible to differentiate malignant masses from benign in most cases.
Diagnosis, Differential* ; Granuloma, Pyogenic ; Nasal Cavity* ; Nasal Polyps* ; Necrosis ; Papilloma, Inverted ; Salivary Glands, Minor ; Sensitivity and Specificity

One of the indications for epikeratophakia is monocular aphakia intolerant of spectacles and contact lens correction and unsuited for intraocular lens implantation for whatever reason. The procedure involves suturing a lamellar corneal stromal tissue of a human donor eye prelathed for corrective power onto the recipient cornea whose epithellum has just been removed. We performed the epikeratophakia procedure on two patients who were included in the above indication on May 26, 1988. Through the first 6 months of postoperative period, both the graft and recipient tissues remained clear with excellent optical quality, with corrected visual acuity of 0.4 at 1 month, 0.6 at 3 month and 0.8 at 6 month postoperative period respectively. The average increase of corneal curvature was 10.5 diopters and induced refractive error was within 1.5 spherical equivalent diopters after the 6 month period. No significant postoperative compications have been encountered.
Adult* ; Aphakia* ; Cornea ; Epikeratophakia ; Eyeglasses ; Humans ; Lens Implantation, Intraocular ; Postoperative Period ; Refractive Errors ; Tissue Donors ; Transplants ; Visual Acuity

The resection of levator aponeurosis and its muscle through the anterior approach had been performed on 50 ptotic lids of 40 patients from April, 1985 to January, 1988. Their age ranged from 28 months to 44 years old(mean, 7.5 years old). All but one of them were congenital origin. Thirty-four per cent of eyes were associated with ocular abnormalities such as strabismus, entropion, and blepharophimosis. Three patients had inguinal hernia, tongue tie, and ventricular septal defect respectively as systemic abonrmalities. The cycloplegic refraction revealed mild hyperopia in 74%, mild myopia in 18%, and moderate or severe hyperopia in 8%. Seventy per cent of eyes had with-the-rule astigmatism, while 8% had againgt-therule astigmatism. Twenty-two per cent had no astigmatism. Amblyopia was noted in 11 patients of 31 patients in whom we could check the visual acuity. The amount of levator muscle resected, which depended on the function of levator muscle and the degree of ptosis, ranged from 15mm to 24mm (mean, 20.2mm). We also applied this procedure to the patient whose levator function was less than 2mm. Good surgical results were obtained in 45 eyes(90%). Undercorrected one eye underwent reoperation using the frontalis sling.
Amblyopia ; Astigmatism ; Blepharophimosis ; Blepharoptosis* ; Entropion ; Heart Septal Defects, Ventricular ; Hernia, Inguinal ; Humans ; Hyperopia ; Myopia ; Reoperation ; Strabismus ; Tongue ; Visual Acuity

Spinal cord injury often leads to central neuropathic pain syndromes, such as allodynic and hyperalgesic behaviors. Electrophysiologically, spinal dorsal horn neurons show enhanced activity to non-noxious and noxious stimuli as well as increased spontaneous activity following spinal cord injury, which often called hyperexcitability or central sensitization. Under hyperexcitable states, spinal neurons lose their ability of discrimination and encoding somatosensory information followed by abnormal somatosensory recognition to non-noxious and noxious stimuli. In the present review, we summarize a variety of pathophysiological mechanisms of neuronal hyperexcitability for treating or preventing central neuropathic pain syndrome following spinal cord injury.
Animals ; Central Nervous System Sensitization ; Discrimination (Psychology) ; Neuralgia ; Neurons ; Posterior Horn Cells ; Rats ; Spinal Cord ; Spinal Cord Injuries

No abstract available.
Jaundice

To evaluate the efficacy and immediate complications of Q-switched Nd:YAG laser iridotomy in the treatment of angle closure glaucoma, Q-switched Nd:YAG laser iridotomy using coherent model 7900(U.S.A.)was performed on 50 eyes, 43 patients with angle closure glaucoma between Feb. 1987 and Mar. 1988. Forty-six eyes of Thirty-nine Patients had been followed up {or more than 2 months. Four eyes were lost to follow-up. Among 50 treated eyes, 46 required a single laser session for patency and four eyes required two sessions. Intraocular pressure was significantly decreased after Q-switched Nd: YAG laser iridotomy and the continuous use of previous glaucoma medications as necessary(p<0.01). Immediate postoperative intraocular pressure elevation was seen in two Nd:YAG-treated eyes. Thirty-five eyes treated with the Nd:YAG laser had minimal bleeding from the iridotomy site. Forty-four Nd:YAG-treated eyes had transient iritis.
Glaucoma* ; Glaucoma, Angle-Closure ; Hemorrhage ; Humans ; Intraocular Pressure ; Iritis ; Lasers, Solid-State ; Lost to Follow-Up

Adrenal cortical carcinoma is classified clinically as functioning and nonfunctioning and the latter is though to be extremely rare and causes generally mass effect or symptoms due to metastasis because of insufficient steroid secretion. We report a case of nonfunctioning adrenal cortical carcinoma, which is thought to be heterotopic origin.
Adrenocortical Carcinoma* ; Neoplasm Metastasis

Although hypoglycemia may be common among neonates, brain injuries resulting from isolated neonatal hypoglycemia are rare. The condition may cause neurological symptoms such as stupor, jitteriness, and seizures, though in their absence, diagnosis is delayed or difficult. Hypoglycemia was diagnosed in a three-day-old neonate after he visited the emergency department with loose stool, poor oral intake, and decreased activity, first experienced two days earlier. Two days after his visity, several episodes of seizure occurred. T2 and diffusion-weighted magnetic resonance (MR) scanning, performed at 11 days of age, revealed bilateral and symmetrical high signal intensity lesions in occipital, parietal, and temporal lobes. We report the MR findings of hypoglycemic encephalopathy in a neonate.
Brain Injuries* ; Brain* ; Diagnosis ; Emergency Service, Hospital ; Humans ; Hypoglycemia* ; Infant, Newborn ; Rabeprazole ; Seizures ; Stupor ; Temporal Lobe