11 research outputs found

    Analysis of computed tomographic manifestations of primary lung cancer by histologic types

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    ์˜ํ•™๊ณผ/์„์‚ฌ[ํ•œ๊ธ€] ํ•œ๊ตญ์ธ์— ์žˆ์–ด์„œ ์›๋ฐœ์„ฑ ํ์•”์€ ๊ธ‰๊ฒฉํžˆ ๊ทธ ๋นˆ๋„๊ฐ€ ์ฆ๊ฐ€ํ•˜๋Š” ์•”์œผ๋กœ ์•Œ๋ ค์ ธ ์žˆ์œผ๋ฉฐ ๊ฐ ์„ธํฌํ˜•์— ๋”ฐ๋ผ ๋ณ‘ํƒœ์ƒ๋ฆฌ๊ฐ€ ๊ฐ๊ฐ ์ฐจ์ด๊ฐ€ ์žˆ๋Š” ๊ฒƒ์œผ๋กœ ์•Œ๋ ค์ ธ ์žˆ๋‹ค. ์—ฐ๊ตฌ์ž๋Š” 1983๋…„๋ถ€ํ„ฐ 1987๋…„ 8์›”๊นŒ์ง€ ์—ฐ์„ธ๋Œ€ํ•™๊ต ์˜๊ณผ๋Œ€ํ•™ ๋ถ€์† ์„ธ๋ธŒ๋ž€์Šค๋ณ‘์›์— ์ž…์›ํ•˜ ์—ฌ ๋ณ‘๋ฆฌํ•™์  ์†Œ๊ฒฌ์— ์˜ํ•˜์—ฌ ์›๋ฐœ์„ฑ ํ์•”์œผ๋กœ ํ™•์ง„๋œ ํ™˜์ž 204๋ช…์ค‘ ์„ธํฌํ˜•์ด ํ™•์ •๋œ ํ™˜์ž 183๋ช…์„ ๋Œ€์ƒ์œผ๋กœ ํ‰๋ถ€ ์ „์‚ฐํ™” ๋‹จ์ธต ์ดฌ์˜์ƒ์˜ ์†Œ๊ฒฌ์„ ์„ธํฌํ˜•์— ๋Œ€ํ•œ ์‚ฌ์ „์ •๋ณด์—†์ด ๋ถ„์„ํ•˜ ์—ฌ ๋‹ค์Œ๊ณผ ๊ฐ™์€ ๊ฒฐ๊ณผ๋ฅผ ์–ป์—ˆ๋‹ค. 1 .๋ณ‘๋ฆฌ์กฐ์งํ•™์  ๋ถ„ํฌ๋Š” ํŽธํ‰์ƒํ”ผ์„ธํฌ์•” 96์˜ˆ (52.5%),์„ ์•” 43์˜ˆ (23.5 %), ๋Œ€๋ฏธ ๋ถ„ํ™” ์„ธํฌ์•” 17์˜ˆ (9.2%), ์†Œ๋ฏธ๋ถ„ํ™”์„ธํฌ์•” 27์˜ˆ (14.8%)์˜€๋‹ค. 2. ๋‚จ๋…€์˜ ์„ฑ๋ณ„๋น„๋Š” 3.9:1์ด์—ˆ์œผ๋ฉฐ, ์†Œ๋ฏธ๋ถ„ํ™”์„ธํฌ์•”์—์„œ ๊ฐ€์žฅ ๋†’์•˜๊ณ , ์„ ์•”์—์„œ๋Š” 1.1: 1๋กœ ์„ฑ๋ณ„์˜ ์ฐจ๊ฐ€ ์—†์—ˆ๋‹ค. 3. ํ‰๊ท ์—ฐ๋ น์€ ๋Œ€๋ฏธ๋ถ„ํ™”์„ธํฌ์•”์˜ 58.0ยฑ9.57๋กœ๋ถ€ํ„ฐ ์†Œ๋ฏธ๋ถ„ํ™”์„ธํฌ์•”์˜ 60.5ยฑ10.42๋กœ ์„ธ ํฌํ˜•์— ๋”ฐ๋ฅธ ์—ฐ๋ น๋ถ„ํฌ์— ์ฐจ์ด๊ฐ€ ์—†์—ˆ๋‹ค. 4. ๊ฐ ์„ธํฌํ˜•์— ๋”ฐ๋ฅธ ์ „์‚ฐํ™” ๋‹จ์ธต ์ดฌ์˜์ƒ์˜ ์†Œ๊ฒฌ์€ ๋‹ค์Œ๊ณผ ๊ฐ™์•˜๋‹ค. (๊ฐ€) ํŽธํ‰์ƒํ”ผ์„ธํฌ์•”์—์„œ๋Š” ์ด 96์˜ˆ์ค‘ ์ค‘์‹ฌํ˜•(central type)์ด 52์˜ˆ (54%)๋กœ ๊ฐ€์žฅ ๋งŽ์•˜ ๊ณ , ์ฃผ์š” ๊ธฐ๊ด€์ง€ ํ์‡„์†Œ๊ฒฌ์€ ์™„์ „ํ์‡„ 58์˜ˆ (60%), ๋ถ€๋ถ„ํ์‡„ 24์˜ˆ (25 %)๋ฅผ ๋ณด์˜€๊ณ , ์ข…๊ดด ์˜ ๋™๊ณต ํ˜•์„ฑ์ด 10%๋กœ์„œ ๋‹ค๋ฅธ ํ˜•์— ๋น„ํ•ด ๋†“์•˜๋‹ค. (๋‚˜) ์„ ์•”์€ ์ด 43์˜ˆ์ค‘ ๋ง์ดˆํ˜•์ด 28์˜ˆ (63%)๋กœ ๊ฐ€์žฅ ๋งŽ์•˜๊ณ , ํ๊ฐ„๋‚ด ์ „์ด ์†Œ๊ฒฌ์ด 28%๋กœ ๋‹ค๋ฅธ ํ˜•์— ๋น„ํ•ด ๋†’์•˜๋‹ค. (๋‹ค) ๋Œ€๋ฏธ๋ถ„ํ™”์„ธํฌ์•”์€ ์ด 17์˜ˆ์ค‘ ๋ง์ดˆํ˜•์ด 9์˜ˆ (53 %)๋กœ ๊ฐ€์žฅ ๋งŽ์•˜์œผ๋ฉฐ, ์ฃผ์š”๊ธฐ๊ด€์ง€ ํ์‡„์†Œ๊ฒฌ์€ ์™„์ „ํ์‡„ 4์˜ˆ (23%), ๋ถ€๋ถ„ํ์‡„ 6์˜ˆ (35 %)๋กœ ๋‚ฎ์•˜์œผ๋ฉฐ, ํ‰๋ฒฝ ์นจ์ž…์†Œ๊ฒฌ์ด 41% ๋กœ ๋‹ค๋ฅธ ํ˜•์— ๋น„ํ•ด ๋†’์•˜๋‹ค. (๋ผ) ์†Œ๋ฏธ๋ถ„ํ™”์„ธํฌ์•”์˜จ ์ด 27์˜ˆ์ค‘ ์ค‘์‹ฌํ˜• 19์˜ˆ (70%)๋กœ ์ค‘์‹ฌํ˜•์˜ ๋นˆ๋„๋Š” ๊ฐ€์žฅ ๋†’์œผ๋‚˜ ์ฃผ์š”๊ธฐ๊ด€์ง€ ํ์‡„์†Œ๊ฒฌ์€ ์™„์ „ํ์‡„ 9์˜ˆ (33%),๋ถ€๋ถ„ํ์‡„ 17์˜ˆ (63%)์—์„œ ๋ณด์—ฌ ๋ถ€๋ถ„ํ์‡„์˜ ๊ฒฝ ์šฐ๊ฐ€ ๋งŽ์•˜๊ณ , ์‹ฌ๋‚ญ์‚ผ์ถœ์•ก ๋ฐ ๋น„ํ›„์˜ ์†Œ๊ฒฌ์ด 18%๋กœ ๋‹ค๋ฅธ ์„ธํฌํ˜•์— ๋น„ํ•ด ๋†’์•˜๋‹ค. ์ด์ƒ์˜ ๊ฒฐ๊ณผ๋กœ ์›๋ฐœ์„ฑ ํ์•”์€ ๊ฐ ์„ธํฌํ˜•์— ๋”ฐ๋ผ ๋ถ€๋ถ„์ ์œผ๋กœ ์„ฑ์žฅ ํŠน์ง•, ์ „ํŒŒ์˜ ์–‘์ƒ์— ์ฐจ์ด๋ฅผ ๋ณด์ด๊ณ  ์žˆ์Œ์„ ์•Œ ์ˆ˜ ์žˆ๋‹ค. [์˜๋ฌธ] It is well know that primary lung cancer is one of the most common malignancies in Kotea, With respect to the histologic type, primary lung Carcinoma manifests itself in a number of different ways. The author analyzed the chest computed tomographic (C-T) findings of 183 cases of pathologically confirmed primary lung cancer from 1983 to Aug.1987 using no information which referred to the histologic type. The results are as follows. 1. The distribution of histologic types of primary lung cancer was as follows ; epidermoid carcinoma, 96 cases(52.5%); adenocarcinoma, 43 casas(23.5%); undifferentiated large cell carcinona, 17 cases(9.2%) and undifferentiated small cell carcinoma, 27 cases(14.8%). 2. The male to female ratio was 3.9:l, the highest ratio occuring in undifferentiated small cell carcinoma 12.5:1 and the lowest ratio in adenocarcinoma 1.1:1 where there was no difference in the male to female ratio. 3. The mean age of primary lung cancer patients did not vary with respect to histologic type ; epidermoid carcinoma 59.1ยฑ10.71 years, adenocarcinoma 59.2ยฑ9.66 years, undifferentiated large cell carcinoma 58.0ยฑ9.57 years and undifferentiated small cell carcinoma 60.5ยฑ10.42 years. 4. Chest computed tomographic firdings by histologic type were as follows; (a). Epidermoid carcinoma (96 cases): The central type was the most prevalent (52 cases) with an incidence of 54%. Major air way obstruction was complete in 60% of the cases and partial in 25%. The incidence of cavitating malignancy was 10%, more common than other histologic types. (b). Adenocarcinoma (43 cases): The peripheral type was the most prevalent (28 cases) with an incidence of 63%. major air way obstruction was complete in 23%, partial in 19%, lower incidence than other histologic types. Lung to lung metastasis was 28%, more common than other histologic types. (c). Undifferentiated large cell carcinoma (17 cases): The highest incidene occurred in the peripheral type 9 cases(53%). major air way obstruction was complete in 23% of the cases and partial in 35%, higher incidence than adenocarcinoma. Chest wall involvement was 41%, more common than other histologic types. (d). Undifferentiated small cell carcinoma (27 cases): The central type(19 cases) presented the highest incidence(70%). major air way obstruction was noted as complete 33%, partial 63%, higher incidence of partial obstruction than other histoloaic types. The incidence of pericardial effusion and/or thickening was 18%, more common than other histologic types. In summary, primary lung cancer showed some differences in growth and propagation on chest computed tomography according to histologic types.restrictio

    Topographical anatomy and magnetic resonance images of the cranial nerves passing through the internal acoustic meatus

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    ์˜ํ•™๊ณผ/๋ฐ•์‚ฌ[ํ•œ๊ธ€] ์ด ์—ฐ๊ตฌ์˜ ๋ชฉ์ ์€ (1) ์†Œ๋‡Œ๋‹ค๋ฆฌ๋‡Œ๊ตฌ์„(cerebellopontine angle) ๋ถ€์œ„์—์„œ ์•ž์•„๋ž˜์†Œ๋‡Œ๋™๋งฅ๊ณผ ์†๊ท“๊ตฌ๋ฉ(internal acoustic pore)์œผ๋กœ ์ง€๋‚˜๊ฐ€๋Š” ๋‡Œ์‹ ๊ฒฝ๋“ค์˜ ๋ณ€์ด์™€ ์ด๋“ค์˜ ๊ตญ์†Œํ•ด๋ถ€ํ•™์  ๊ด€๊ณ„๋ฅผ ๋ฐํžˆ๋ฉฐ, (2) ๋‡Œ์ค„๊ธฐ์—์„œ ์†๊ท“๊ธธ(internal acoustic meatus)๊นŒ์ง€ ์–ผ๊ตด์‹ ๊ฒฝ ์šด๋™์ค„๊ธฐ, ์ค‘๊ฐ„์‹ ๊ฒฝ, ์†๊ท€์‹ ๊ฒฝ(vestibulocochlear nerve)์˜ ๊ด€๊ณ„์˜ ๋ณ€์ด๋ฅผ ๊ด€์ฐฐํ•˜๋ฉฐ, (3) ์–ผ๊ตด์‹ ๊ฒฝ, ์ค‘๊ฐ„์‹ ๊ฒฝ, ์†๊ท€์‹ ๊ฒฝ์˜ ์œ„์น˜๊ด€๊ณ„์™€ ๊ฐ™์€ ๋ถ€์œ„์˜ ์ž๊ธฐ๊ณต๋ช…์˜์ƒ๊ณผ ๋น„๊ตํ•˜์—ฌ ๋‡Œ์‹ ๊ฒฝ๋“ค์˜ ๊ด€์ฐฐ์œจ์„ ๋†’์ด๊ณ , (4) ์ค‘๊ฐ„๋จธ๋ฆฌ๋ผˆ์šฐ๋ฌต(middle cranial fossa)์„ ํ†ตํ•˜์—ฌ ์†๊ท“๊ธธ์„ ์—ด ๋•Œ ์ฃผ์š” ๊ตฌ์กฐ๋ฅผ ๋ณด์กดํ•˜๋Š” ๋ฐ ํ•„์š”ํ•œ ์—ฌ๋Ÿฌ ๊ฐ€์ง€ ์ง€ํ‘œ๋ฅผ ๊ณ„์ธกํ•˜๋Š” ๋ฐ ์žˆ๋‹ค. ํ•ด๋ถ€์—๋Š” ํ•œ๊ตญ์„ฑ์ธ ๋จธ๋ฆฌ 50์ชฝ, ์ž๊ธฐ๊ณต๋ช…์˜์ƒ์—๋Š” ์ •์ƒ์ธ 35๋ช…์—์„œ 58์ชฝ์„ ์‚ฌ์šฉํ•˜์˜€๋‹ค. ํ•ด๋ถ€๊ด€์ฐฐ์—๋Š” ์ˆ˜์ˆ ํ˜„๋ฏธ๊ฒฝ์„ ์ด์šฉํ•˜์˜€๊ณ , ์†๊ท“๊ธธ ์ฒœ์žฅ์€ ๋“œ๋ฆด์„ ์ด์šฉํ•˜์—ฌ ์—ด์—ˆ๋‹ค. ๊ฒฐ๊ณผ๋Š” ์•„๋ž˜์™€ ๊ฐ™๋‹ค. 1. ์•ž์•„๋ž˜์†Œ๋‡Œ๋™๋งฅ์€ ๋ชจ๋‘ ๋‡Œ๋ฐ”๋‹ฅ๋™๋งฅ(basilar artery)์˜ ์•„๋ž˜์ชฝ 2/3์—์„œ ์ผ์–ด๋‚ฌ๊ณ , ๋‘๊ฐœ ์žˆ๋Š” ๊ฒฝ์šฐ๋Š” 4%์˜€๋‹ค. ์•ž์•„๋ž˜์†Œ๋‡Œ๋™๋งฅ์ด ์†Œ๋‡Œ๋‹ค๋ฆฌ๋‡Œ๊ตฌ์„ ๋ถ€์œ„์—์„œ ๋‹ฌ๋ฆฌ๋Š” ๋ชจ์–‘์€ 5 ์œ ํ˜•์œผ๋กœ ๋ถ„๋ฅ˜๋˜์—ˆ๊ณ , ์™„๋งŒํ•œ ๊ณก์„ ํ˜•์ด 46%์˜€๊ณ , ๋‚˜๋จธ์ง€๋Š” ๋™๋งฅ์ด ๊ณ ๋ฆฌ ๋˜๋Š” ๊ณ ๋ฆฌ๊ฐ€ ๊ผฌ์ธ ๋ชจ์–‘์œผ๋กœ ๋‹ฌ๋ ธ๋‹ค. 2. ์•ž์•„๋ž˜์†Œ๋‡Œ๋™๋งฅ์ด ์–ผ๊ตด์‹ ๊ฒฝ, ์ค‘๊ฐ„์‹ ๊ฒฝ, ์†๊ท€์‹ ๊ฒฝ๊ณผ ์ด๋ฃจ๋Š” ์œ„์น˜๊ด€๊ณ„๋Š” 6 ์œ ํ˜•์œผ๋กœ ๋‚˜๋‰˜์—ˆ๊ณ , ๋™๋งฅ์ด ์„ธ ์‹ ๊ฒฝ์˜ ๋ฐฐ์ชฝ์œผ๋กœ ์ง€๋‚˜๊ฐ€๋Š” ๊ฒฝ์šฐ๊ฐ€ 32%๋กœ ๊ฐ€์žฅ ๋งŽ์•˜๋‹ค. ๊ทธ๋ฆฌ๊ณ  ๋™๋งฅ์ด ๋‹ฌ๋ฆฌ๋Š” ๋ชจ์–‘๊ณผ ๋™๋งฅ๊ณผ ์„ธ ์‹ ๊ฒฝ์ด ์ด๋ฃจ๋Š” ๊ด€๊ณ„๋ฅผ ๊ธฐ์ˆ ํ•˜์˜€๋‹ค. 3. ์•ž์•„๋ž˜์†Œ๋‡Œ๋™๋งฅ์€ ์–ผ๊ตด์‹ ๊ฒฝ ๋ฐ ์†๊ท€์‹ ๊ฒฝ๊ณผ ์ ‘์ด‰ํ•˜์ง€ ์•Š๋Š” ๊ฒฝ์šฐ๋Š” 12%์˜€๊ณ , ๋‘ ์‹ ๊ฒฝ์ด ๊ฐ๊ฐ ํ•œ ๋ฒˆ ์ด์ƒ ๋™๋งฅ๊ณผ ์ ‘ํ•œ ๊ฒฝ์šฐ๋Š” 44%์˜€๋‹ค. 4. ์ค‘๊ฐ„์‹ ๊ฒฝ์˜ ์ž”๋ฟŒ๋ฆฌ๋Š” 2โˆผ8๊ฐœ์˜€์œผ๋ฉฐ, 3โˆผ4๊ฐœ์ธ ๊ฒฝ์šฐ๊ฐ€ 52%์˜€๋‹ค. ๋ชจ๋‘ 50์˜ˆ์—์„œ 197 ์ž”๋ฟŒ๋ฆฌ๊ฐ€ ์ผ์–ด๋‚ฌ๊ณ , ์ด ์ค‘ 61.5%๋Š” ์†๊ท€์‹ ๊ฒฝ ๋ฟŒ๋ฆฌ ๋˜๋Š” ์ค„๊ธฐ์—์„œ ์ผ์–ด๋‚ฌ๋‹ค. 5. ์ค‘๊ฐ„์‹ ๊ฒฝ์ด ์–ผ๊ตด์‹ ๊ฒฝ ์šด๋™์ค„๊ธฐ ๋˜๋Š” ์†๊ท€์‹ ๊ฒฝ๊ณผ ์—ฐ๊ฒฐ๊ฐ€์ง€๋ฅผ ๊ฐ–๋Š” ๊ฒฝ์šฐ๋Š” 86.4%์˜€๊ณ , ์—ฐ๊ฒฐ๋˜๋Š” ์œ„์น˜์™€ ์‹ ๊ฒฝ์— ๋”ฐ๋ผ 7 ์œ ํ˜•์œผ๋กœ ๋ถ„๋ฅ˜๋˜์—ˆ๋‹ค. 6. ์ค‘๊ฐ„์‹ ๊ฒฝ์˜ ์ค„๊ธฐ๋Š” 50%์—์„œ๋Š” ์†๊ท€์‹ ๊ฒฝ์— ์ ‘ํ•˜์—ฌ ๋‹ฌ๋ฆฌ๋‹ค ์†๊ท“๊ตฌ๋ฉ ๊ทผ์ฒ˜์—์„œ ์–ผ๊ตด์‹ ๊ฒฝ์ชฝ์œผ๋กœ ์ ‘ํ•˜์˜€๋‹ค. ์ค‘๊ฐ„์‹ ๊ฒฝ์€ ์ž๊ธฐ๊ณต๋ช…์˜์ƒ์—์„œ 42.9%์—์„œ ํ™•์ธํ•  ์ˆ˜ ์žˆ์—ˆ๋‹ค. 7. ์–ผ๊ตด์‹ ๊ฒฝ, ์ค‘๊ฐ„์‹ ๊ฒฝ, ์†๊ท€์‹ ๊ฒฝ์˜ ์œ„์น˜๊ด€๊ณ„์˜ ๋ณ€์ด๋ฅผ ๋ฟŒ๋ฆฌ๋ถ€๋ถ„, ๋ฟŒ๋ฆฌ์™€ ์†๊ท“๊ตฌ๋ฉ ์‚ฌ์ด ๋ถ€๋ถ„, ์†๊ท“๊ตฌ๋ฉ๋ถ€๋ถ„, ์†๊ท“๊ธธ์ค‘๊ฐ„๋ถ€๋ถ„์—์„œ ๊ด€์ฐฐํ•˜๊ณ  ๊ฐ™์€ ๋ถ€์œ„์˜ ์ž๊ธฐ๊ณต๋ช…์˜์ƒ๊ณผ ๋น„๊ตํ•˜์˜€๋‹ค. ๋Œ€์ฒด๋กœ ๋ฟŒ๋ฆฌ๋ถ€๋ถ„์—์„œ๋Š” ์†๊ท€์‹ ๊ฒฝ์ด ๋’ค์ชฝ์— ์„ธ๋กœ๋กœ ๋ฐฐ์—ด๋˜๊ณ  ์•ž ์ค‘๊ฐ„์— ์–ผ๊ตด์‹ ๊ฒฝ ๊ทธ๋ฆฌ๊ณ  ๊ทธ ์‚ฌ์ด์— ์ค‘๊ฐ„์‹ ๊ฒฝ์ด ์žˆ์—ˆ๋‹ค. ๋ฟŒ๋ฆฌ์™€ ์†๊ท“๊ตฌ๋ฉ ์ค‘๊ฐ„๋ถ€์œ„์—์„œ๋Š” ์†๊ท€์‹ ๊ฒฝ์˜ ๋‹ฌํŒฝ์ด์‹ ๊ฒฝ๋ถ€๋ถ„์ด ์•„๋ž˜์•ž์ชฝ์œผ๋กœ ์•ฝ๊ฐ„ ๋Œ์•„๊ฐ€ ์žˆ์—ˆ๋‹ค. ์†๊ท“๊ตฌ๋ฉ๋ถ€์œ„์—์„œ๋Š” ๋‹ฌํŒฝ์ด์‹ ๊ฒฝ๋ถ€๋ถ„์ด ๋” ์•ž์ชฝ์œผ๋กœ ๋Œ์•„๊ฐ”๊ณ , ์†๊ท“๊ธธ ์ค‘๊ฐ„์—์„œ๋Š” ๋‹ฌํŒฝ์ด์‹ ๊ฒฝ์ด ๋ถ„๋ฆฌ๋˜์–ด ์–ผ๊ตด์‹ ๊ฒฝ ์•„๋ž˜์ชฝ์— ์žˆ์—ˆ๋‹ค. 8. ์ค‘๊ฐ„๋จธ๋ฆฌ๋ผˆ์šฐ๋ฌต์„ ํ†ตํ•ด ์†๊ท“๊ธธ ์ฒœ์žฅ์„ ์•ˆ์ „ํ•˜๊ฒŒ ์—ด ๋•Œ ํ•„์š”ํ•œ 12๊ฐ€์ง€ ์ง€ํ‘œ๋ฅผ ๊ณ„์ธกํ•˜์˜€๋‹ค. ์ด์ƒ์˜ ์—ฐ๊ตฌ ๊ฒฐ๊ณผ๋“ค์€ ์†Œ๋‡Œ๋‹ค๋ฆฌ๋‡Œ๊ตฌ์„๋ถ€์œ„์™€ ์†๊ท“๊ธธ์„ ๋…ธ์ถœํ•˜๋Š” ์ˆ˜์ˆ ์„ ํ•  ๋•Œ ์ฐธ๊ณ ๊ฐ€ ๋˜๋Š” ์ž๋ฃŒ๋ฅผ ๋งˆ๋ จํ•˜์˜€๊ณ , ํŠนํžˆ ์ค‘๊ฐ„์‹ ๊ฒฝ๊ณผ ๊ด€๋ จ๋œ ๊ฒฐ๊ณผ๋“ค์— ๋Œ€ํ•œ ๊ฒƒ์€ ๋‹ค๋ฅธ ๋ฌธํ—Œ์„ ์ฐพ์„ ์ˆ˜ ์—†๋Š” ๊ฒƒ์ด์—ˆ๋‹ค. ๋˜ ์†๊ท“๊ตฌ๋ฉ์œผ๋กœ ์ง€๋‚˜๊ฐ€๋Š” ๋‡Œ์‹ ๊ฒฝ์„ ์ž๊ธฐ๊ณต๋ช…์˜์ƒ์œผ๋กœ ๊ด€์ฐฐํ•  ๋•Œ ํ˜•ํƒœ๋ณ€์ด์™€ ๊ด€๋ จ์ง€์šฐ๋ฏ€๋กœ์„œ ์ผ๋ถ€ ๊ตฌ์กฐ๋Š” ๊ด€์ฐฐ์œจ์„ ๋†’์ผ ์ˆ˜ ์žˆ๊ณ  ์ผ๋ถ€ ๊ตฌ์กฐ๋Š” ๋” ๋ช…ํ™•ํ•œ ํŒ๋…์„ ํ•˜๋Š” ๋ฐ ๋„์›€์„ ์ค„ ์ˆ˜ ์žˆ๋‹ค๊ณ  ์ƒ๊ฐ๋œ๋‹ค. [์˜๋ฌธ] The purposes of this study are (1) to identify the morphological variations and the anatomical relationship of the anteror inferior cerebellar artery in the cerebellopontine angle and the cranial nerves passing through the internal acoustic meatus, (2) to observe the variations of the motor stem to the internal acoustic meatus, (3) to improve the detection rate of the facial, the intermediate and the vestibulocochlear nerves in MRI(Magnetic Resonance Imaging) by comparing the MR images with the corresponding anatomical structures, and (4) to measure the various indexes which are necessary in preserving the important structures in dissecting the internal acoustic meatus through the middle cranial fossa. For the dissections, 50 Korean cadaver heads and for the MRI, 58 from 35 normal adults were used. Surgical microscope was used for the dissections and the drill was used for opening of the internal acoustic meatus. The results were as follows: 1) All anterior inferior cerebellar artery originated from the inferior two thirds of the basilar artery, and double arteries were present in 4% of the cases. The morphology of the anterior inferior cerebellar artery in the cerebellopontine anํžˆe were divided into five types, and the mildly curved type consisted of 46% while the rest of the arteries were shaped like loops or twisted loops. 2) The anatomical relationship of the anterior inferior cerebellar artery with the facial nerve, the intermediate nerve, and the vestibulocochlear nerve were classified into 6 types, and the type in which the artery passes ventral to the three nerves were most common with 32%. The morphologic characteristics and the relationship of the artery and the three nerves were described. 3) In 12%, the anterior inferior cerebellar artery did not contact the facial and vestibulocochlear nerves, however, in 44%, both nerves came into contact with the artery at least once. 4) The number of the rootles of the intermediate nerve was variable with 2 to 8, and in 52%, there were 3 or 4 rootlets. One hundred and ninety seven rootlets were found in 50 cases, and 61.5% of them originated from the root or the trunk of the vestibulocochlear nerve. 5) In 86.4%, the intermediate nerve had motor trunk of the facial nerve or connecting branch to the vestibulocochlear nerve, and they were divined into 7 types. 6) The intermediate nerve truck came into contact with the facial nerve in the internal acoustic pore after passing along the vestibulocochlear nerve in 50%. The intermediate nerve was identified in MRI in 42.9%. 7) The anatomical relationship of the facial, the intermediate, the vestibulocochlear nerves were observed in the root level, between the root and the internal acoustic pore, in the internal acoustic pore region, and the mid portion of the internal acoustic meatus; and their anatomy was compared with the corresponding MR images. In most cases, the vestibulocochlear nerves in the root level were lined up perpendicularly behind the facial and the intermediate nerves. In the root and the mid portion of the internal acoustic pore, the cochlear nerve component of the vestibulocochlear nerve were located slightly inferoanteriorly. In the region of the internal acoustic pore, the cochlear nerve component was located more anteriorly while in mid portion of the internal acoustic meatus, the nerve was separated and located below the facial nerve. 8) The 12 indexes which are needed in safely dissecting the internal acoustic meatus through the middle cranial fossa were measured. The above results may help the surgeons in the surgeries requiring dissections of the cerebellopontine angle and the internal acoustic meatus, and especially the findings associated with the intermediate nerve can not be found elsewhere. Furthermore, the morphological variation and MR images of the cranial nerve passing through the internal acoustic meatus that were described here might be helpful for surgeons in identifying these structures during surgery, as well as for radiologist in reading of MR images more accurately.restrictio
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