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9. Swarts JD , Mandell DW, Berman SE , et al. Cochear otos. clerosis(Otospongiosis) analysis w ith aud iometric correlat ion Radiology 1985 ; 155 : 147-150 10. Malee MF, Valvassori GE , Deitch RL , et al. Use 01 CT in the eval uation 01 cochl ear otosclerosis. Radiology 1985 ; 156 703.714 11. Seltzer S, Mark AS. Contrast enhancement 01 the labyrinth on MR Scans in patients with sudden hearing 1055 and vertigo Evidence 01 labyr inthi al di5ease. AJNR 1991 ; 12:13.16 % ω 윤은겸 측두골 CT상 관잘된 와우 이경화증Otosclerosis occurs when the normal ivory-like endochondral bone of the otic capsule is replaced by foci of spongy vascular irregular new bone. Eventually these foci of haversian bone become more solid. There are tw。 types of otosclerosis : fenestral and retrofenestral or cochlear. The cochlear type is much less common and rarely occurs without fenestral involvement. Otosclerosis occurs very rarely in blacks and orientals; in 。tolaryngologic articles in Korea there are few reports of otosclerosis , and then only the fenestral type. This is a case report of cochlear otosclerosis that can be diagnosed on temporal bone CT.
있었다. Concha bullosa( 28.6%) 나 paradoxical middle turbin ate( 31.5%) 와 같은 비갑개의 변이, 내측 (36.3%) 혹은 외측 (3.7 %) 으로 전위되거나 기포화 (0.5 %) 된 구상돌기, Haller's cell(28.2%), 커진 agger nasi cell( 9.6%), 키진 사글포 (23.5%) 와 비중격만곡증 (24.1 %)0 1 전자에 속했고, onodi cell( 1. 4%) 과 지앙성 판막의 내측 함몰이 후자에 속했다. 이러한 변이들이 각 점막성 배출통로의 협소 또는 폐쇄를 돔반한 경우는 비전두 함요는 주로 커진 agger nasi cell(87예), 사글누두는 커진 사글포 (452 여 1) , Haller's cell(245여 1 ) , true concha bullosa(25여 1 ), 중비도는 내측전위된 구상돌기 (220여 1) , concha bullosa(157예), paradoxical middle turbinate( 126 여 1 ), 비중격만곡증 (93예), 접사함요의 경우는 상비 갑개의 기포화 (3예)에서 볼수 있었다. 결 론:해부학적 변이들의 임상적 의의는 첫째, 이들이 실제로 점막성 배출통로를 협소 또는 페쇄 시키고 있는지, 둘째, 협소 또는 폐쇄가 있다면 이차적으로 연관된 부비동에 염증을 동반하고 있는지 에 있으며, 세째로늠 일부 변이는 비내시경술시 심각한 합병증을 유발 할 수 있으므로 사전에 알고 유 의를 해야 하늠데 있다고 할 수 있다.
Most subdural hematoma with significantly differed attenuation from that of adjacent brain tissue can be accurately diagnosed by CT . Difficulty arises when the hematoma is isodense that is ex hibited similar attenuation to that of brain . Unilateral isodense subdural hematoma can be identified by indirect sign such as mass effect. Occasionally , the use of intravenous contrast material to aid in identifying isodense subdural hematomas has met with with variable success. Moreover , bilateral isodense subdural hematoma may be more difficult. We therefore considered it of intercst to evaluate the diagnostic efficiency of CT in isodense subdural he matomas.We have analysed 13 cases surgically provened cases of isodense subdural hematoma examined at Korea General Hospital from October 1981 10 April1982.The results were as follows:1. One hundred twenty seven cases of subdural hematomas were studied by CT , 13 cases (10 .2 %) of which were isodense 2 . The age distribution was from 29 years 10 69 years and mean age was 52 years. The sex ratio was 11 male to 2 female.3. Seven (53 .8%) of 13 cases has a h istory of head trauma. 4 . The lime interval which subdural hematoma became isodense was from 1 week to 4 months and peak time interval was from 1 week to 3 weeks.5. The precontrast CT scan of isodense subdural hematoma appeared shifting of midline structure, compression and deformity of the ventricles in all 13 cases , effacement of cerebral sulci in 10 cases (76 .9 %) and dilatation o f contralateral ventricles in 4 cases (30.8 %). 7. Bilateral isodense subdural hematomas were 2 (15 .4%) of 13 cases.
Since a n accurate description on the pathophysiology ofthe nasal cavity and paranasal sinus (PNS) was established a detailed evalualion of their anatomic and pathologic status . especially ofthe ostiomeatal uni t. has become important ' and compuled tomography (CT) has increasingly been used for evaluating chronic sinusitis. This stud y was unde rtake n lo assess the value of CT in chronic or recurre nl paranasal s inusitis and to asce rtain the theo ry of rhinoge nic origin as lhe palhophysiologic basis of sinusilis. We retrospectively a nalyzed the PNS CT findings of 108 patients with chronic or rec urrent sinusitis. The CT scans were oblained in thin-section (3mm or 5mm) coronal and axial planes afte r conlrast medium administration.With respect lo th e localion of the sinusilis. the a nlerior ethmoid sinus was involved in 98 (91 %). maxillary sinus in 93 (86%). fronta l sinus in 60 (56%). poslerior ethmoid sinus in 35 (32%). and sphenoid sinus in 32 cases (30%).CT findings of the si nus ilis consisled of sinus opacificalion (74%) ' mucoperiosteal thi cke ning (69%) ' mucosal e nhancem e nt (36 %). air-fluid level (1 8 %) ' and bony wall thic k ening (11 %). Complications included retention cysts (29%). mucoceles (8%) ' and orbital cellulitis (1 %).Obstruction of the ostiom eatal unit was noted in 104 cases (96%). which were composed of inflammatory process . nasa l polyps. concha bullosae . in verting pap illomas. paradox ic midd le turbinates. severe septal devialions' and large ethmoida l bulla. Of the 17 cases with a past hislory of Caldwell-Luc operation' 15 cases showed obstruction of the ostiomeatal unils We co ncluded that CT was a very useful modalily for evaluating chronic or recurrent sinusitis a nd for demonstrating the fin ely detailed palhologic a nalom y of the nasal cavity a nd paranasal sinuses -607
Ultrasonography is most commonly utilized diagnostic tool in obstetric and gynecology for the evaluation of patient with a pelviι mass or pregnancy. For it is characterized by no radiation hazard , noninvasive examination and high diagnostic accuracy. Also it affords an accurate assessment of the presence, size, location and internal consistency of a pelvic mass. The recent availability and improved resolution of realtime scanning have afforded a more flexible and complete approach to evaluation of normal and abnormal structures in the pelvis.We analyzed ultrasonographic findings in 154 pathologically proven cases of pelvic mass examined at Korea General Hospital from January 1983 to Apri11984.The results were as follows:1. The age d istribution was from 12 years to 66 years and the majority of patients were bet ween the ages of 21 and 50 years (91 .4%).2. Th e incidence of pelvic mass was 27.9% in uterine leiomyoma, 22.7 % in ovarian cyst, 13.0% in ad. enomyosis and 8.4% in serous cystadenoma.3. Mild to moderatel y echogenic nodular uterine enlargement with some cystic change (81 .4%) of leio. myoma and multiple small vesicular pattern of intrauterine contents with uterine enlargement of H-mole were the most common ultrasonographic findings.The location and type of leiomyoma were most common in the fundus and body (95 .3%) , and intramural myoma (53.5 %).The most frequent finding of ovarian teratoma was cystic mass with echogenic focus (4 1.7%) but the echogenic appearance of the lesions was extremely variable.The ultrasonographic findings of ectopκ pregnancy were cystic or complex ad nexal mass (80 .0%), with or without fluid in cul-de-sac and devi at ion of uterus by adnexal mass.4. Accuracy of ultrasonography in determining the overall correct diagnosis of the pel vic masses compared with proven diagnosis was approximately 61.7%. The diagnostic accuracy was 90.7 % in uterine leiomyoma, 100% in H-mole and 80.0% in ectop ic pregnancy.
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