• Title/Summary/Keyword: Fibrous

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SURGICAL INDEX FOR BONE SHAVING USING RAPID PROTOTYPING MODEL;TECHNICAL PROPOSAL FOR TREATMENT OF FIBROUS DYSPLASIA (Rapid Prototyping 모델을 이용한 골삭제을 위한 외과적 지표;섬유성 골이형성증 치료를 위한 기술적 제안)

  • Kim, Woon-Kyu
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.23 no.4
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    • pp.366-375
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    • 2001
  • Bone shaving for surgical correction is general method in facial asymmetrical patient with fibrous dysplasia. Therefore, decision of bone shaving amount on the preoperative planning is very difficult for improvement of ideal occlusal relationship and harmonious face. Preoperative planning of facial asymmetry with fibrous dysplasia is generally confirmed by the simulation surgery based on evaluation of clinical examination, radiographic analysis and analysis of facial study model. However, the accurate postoperative results can not be predicted by this method. By using the computed tomography based RP(rapid prototyping) model, simulation of facial skeleton can be duplicated and 3-dimensional simmulation surgery can be perfomed. After fabrication of postoperative study model by preoperactive bone shaving, preoperative and postoperactive surgical index was made by omnivaccum and clear acrylic resin. Amount of bone shaving is confirmed by superimposition of surgical index at the operation. We performed the surgical correction of facial asymmetry patients with fibrous dysplasia using surgical index and prototyping model and obtained the favorable results.

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INTRAARTERIAL CHEMOTHERAPY OF MALIGNANT FIBROUS HISTIOCYTOMA(MFH) IN THE MAXILLA : A CLINICAL CASE (상악에 발생한 악성 섬유성 조직구종의 동주화학요법)

  • Kim, Yong-Kack;Lee, Tae-Hee;Kim, Chul;Kim, Sung-Jin;Kim, Hyuk
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.30 no.2
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    • pp.136-142
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    • 2004
  • Malignant fibrous histiocytoma(MFH) is the malignant part of mesenchymal cell-originated tumor, which is supposed that the tumor is presented various histologic features consisted of fibrosarcomatic and histiocytic portions. When the tumor is arisen in the head and neck region, the most affected sites are the nasal cavity and paranasal sinuses, and secondly the maxillary alveolar bone is occasionally influenced. Therefore, MFH can readily involve the adjacent alveolar bone. The treatment of MFH in the head and neck is various, that is, the involved sites and the differentiation of tumor must be considered when the tumor is treated. The treatment protocols are subjected to general ones of soft tissue sarcoma, and simple or combination therapy is used in the surgery, chemotherapy and radiation therapy. So, we report a clinical case of chemotherapy involving intraarterial chemotherapy, and surgery of malignant fibrous histiocytoma(MFH) in the maxilla, with review of the literature.

A clinical Study of Vitelline Duct and Vessel Remnants (제장간막관 및 혈관 잔류이상에 대한 임상적 고찰)

  • Choi, Jae-Young;Jung, Poong-Man
    • Advances in pediatric surgery
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    • v.4 no.1
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    • pp.27-33
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    • 1998
  • Of 72 patients with vitelline duct and vessel remnants, 45 (62.5 %) had symptomatic lesions. The mean age of the patients was 27.9 months. Males predominated (4.6 : 1). There were 22 cases of Meckel's diverticulum, 6 of Meckel's diverticulum attatched to the umbilicus with a fibrous band, 6 cases of patent vitelline duct, 5 cases of vitelline artery remnants as a fibrous band and 2 cases each of umbilical sinus and polyp, and vitelline cyst. Twenty-three patients (51 %) presented with intestinal obstruction, 6(13 %) with rectal bleeding, 4(9 %) with perforated Meckel's diverticulum, 5 with intestinal juice drainage through umbilicus, 5 with umbilical lesions, 1 with abdominal mass, and 1 with sepsis. Intestinal obstruction due to fibrous band developed during infancy(average age; 4.6 months). Seventeen asymptomatic Meckel's diverticulum, 8 obliterated vitelline artery remnants and 1 vitelline vein remnant as fibrous band, and 1 vitelline cyst were found incidentally at laparotomy. About 82 % of the complicated Meckel's diverticulum presented in infants and children less than 4 years of age.

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EFFECTS ON EATING AND RUMINATION BEHAVIOUR IN SHEEP OF FORMIC ACID AND FORMALDEHYDE TREATMENT AND METHIONINE-SUPPLEMENTATION TO LADINO CLOVER FIBROUS RESIDUE SILAGE

  • Fujihara, T.;Ichinohe, T.;Nakao, T.
    • Asian-Australasian Journal of Animal Sciences
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    • v.8 no.5
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    • pp.477-480
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    • 1995
  • The effects of formic acid and formaldehyde treatment and methionine supplementation to ladino clover fibrous residue silage on eating and rumination behaviour were studied in sheep. From the ladino clover fibrous residue, two silage were prepared, either untreated or treated with formic acid and formaldehyde. Four experimental diets: untreated silage, treated silage, untreated silage with supplementation of methionine and treated silage with supplementation of methionine, were offered to four sheep at a restricted level of DM intake (2% of BW/d) twice daily in a two-way layout design. Methionine supplementation with the treated silage significantly (p < 0.05) reduced daily time spent eating, and consequently, markedly increased rate of eating. However, there was little effect of methionine supplementation on the daily time spent eating and eating rate for sheep offered untreated silage. Methionine supplementation with the treated silage reduced daily time spent ruminating, although the same effect was not observed for untreated silage. The rumination index (time spent ruminating/100 g DM eaten) was remarkably smaller (p < 0.05) with methionine supplement in feeding treated silage, although it did not differ for sheep offered untreated silage. There were no clear effect of methionine supplementation on the rumination efficiency (i.e. number of chews/bolus, bolus time and rumination chewing rate) both feeding untreated silage and treated silage.

Multiple Calcifying Fibrous Pseudotumors in the Pleura - A case report - (흉막에 생긴 다발성 석회화 섬유성 가종양 - 1예 보고 -)

  • Lee, Chang-Young;Byun, Chun-Sung;Park, In-Kyu;Chung, Kyung-Young;Hwang, Yoo-Hwa;Shim, Hyo-Sup
    • Journal of Chest Surgery
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    • v.42 no.5
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    • pp.666-669
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    • 2009
  • Calcifying fibrous pseudotumors (CFP) are rare soft tissue tumors that have unique histopathologic features characterized by a dense hyalinized collagenous tissue interspersed with benign spindle cells, lymphoplasmacytic infiltrate, and psammomatous or dystrophic calcifications. We report here on a case of calcifying fibrous pseudotumors in the pleura and provide a literature review.

Non-Dural-Based Spinal Meningioma : The First Case Report of a Fibrous Subtype and a Review of the Literature

  • Lee, Ji Hye;Moon, Hong Joo;Kim, Joo Han;Park, Youn-Kwan
    • Journal of Korean Neurosurgical Society
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    • v.56 no.1
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    • pp.58-60
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    • 2014
  • Spinal meningiomas typically adhere to the dura matter. Non-dural based spinal meningiomas are rare and most are clear cell meningiomas. We report here the first case of a fibrous meningioma with non-dural attachment. The patient was a 49-year-old female, who complained of numbness in the legs and a gait disturbance. Magnetic resonance imaging revealed a $1.7{\times}1.4-cm$ mass in the C7-T1 intra-dural extramedullary space, showing peripheral gadolinium enhancement without a "dural tail sign". A complete microsurgical resection was performed. The mass was covered with a white membrane but was not adhered to the dura, and its appearance was consistent with a neurilemmoma. The histopathological diagnosis was fibrous-type meningioma. The recovery of the patient was uneventful. No surgical complications and no recurrence of the tumor had occurred at the 6-month follow-up.

A Case of Malignant Fibrous Histiocytoma of the Larynx (후두에 발생한 악성 섬유성 조직구종)

  • Koo, Yong-Cheol;Hwang, Chi-Sang;Kim, Gi-Jeong;Choi, Hong-Shik
    • Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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    • v.22 no.2
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    • pp.159-161
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    • 2011
  • Malignant fibrous histiocytoma is one of the rare types of larynx tumor. The most common sites of the tumor are limbs, trunk, and retroperitoneal space, but tumor localization within head and neck are very rare. It is built of histiocytes, fibroblasts and multinuclear giant cells. A diagnosis of the tumor includes microscopic and immunohistologic examination with identification of specific tissue markers and intermediate filaments of proteins. This disease has been treated by several methods combining radical surgery, radiotherapy, and chemotherapy, but the prognosis is poor. We present 74-year-old Asian man with dysphonia for 2 years. The tumor of the larynx was examined on laryngoscopy. The radical surgery rendered the final pathological diagnosis, confirmed histologically and immunohistochemically as malignant fibrous histiocytoma. This tumor was treated with laser cordectomy followed by radiotherapy. 3.5 year's observation of the patient didn't either show any signs of recurrence or dysphonia.

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A Case of Localized Fibrous Tumor of the Pleura (흉막에 발생한 국소성 섬유성 종양 1예)

  • Kim, Yong-Hwan;Rha, Suk-Joo;Kwack, Moon-Sub
    • Tuberculosis and Respiratory Diseases
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    • v.48 no.3
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    • pp.388-393
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    • 2000
  • Localized fibrous tumor of the pleura is very rare. Most of them are benign, but some are malignant. This clause does not relate with the rest of the sentence. The single best predictor of clinical benignity is whether the tumor can be totally resected. We experienced a case of localized fibrous tumor of the pleura in a 57 year old man with right chest pain and cough. He was informed of a $8{\times}5cm$ mass in his right lower lung field, which was benign 3 years ago. Preoperative chest x-ray showed an increased hazy density at right lower lung field, and CT scan showed a $12{\times}8cm$ huge mass, which was located in right lower thorax. Left thoracotomy was done to excise a $12{\times}8{\times}5cm$(1200gm) sized large mass delete. The patient was discharged without any complications postoperatively.

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Characterization of ginseng extracts

  • Woo, Lin-Keun;Han, Byung-Hoon;Baik, Duck-Woo;Park, Dae-Sic
    • YAKHAK HOEJI
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    • v.17 no.3
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    • pp.129-136
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    • 1973
  • In order to establish the chemical standards for the quality control of ginsentgextract, an approach for the assay of sapogenin contents in the part of main roots and fibrous side roots was performed by combination of preparative thin layer chromotographic procedure and vanillin-$H_{2}SO_{4}$ color reaction. The contents of dammarane aglycones as funcction of dammarane glycosides in 80%-EtOH extracts were analyzed by the method from the main roots and fibrous side roots of Korean ginseng grown for 4-6 years. The differences by their grown ages in the contents of dammarane glycosides, in the ratio of panaxadiol to panaxatriol contents, and in the mounts of 80% EtOH extract were not significant in the parts of main roots and fibrous side roots of Korean gingeng. Differences due to the part for medicinal uses were highly significant in all parameters mentioned, showing following results ; in the main roots ; 80% EtOH extract, 12.7-15.7 % : the ratio of aglycone composition, 0.955-1.012 : dammarane glycoside (as diglucoside bases), 1.537-1.863 ; in fibrous isde roots ; 80% EtOH extract, 26.0-26.02% : dammarane glycoside, 4.767-5.641 : the ratio, 1.456-1.50.

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Microstructure Control of Fibrous Monolithic Al2O3-ZrO2 Composites (섬유단상 Al2O3-ZrO2 세라믹 복합재료의 미세조직제어)

  • Kim, Ki-Hyun;Kim, Taek-Soo;Lee, Byong-Taek
    • Korean Journal of Materials Research
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    • v.13 no.4
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    • pp.213-218
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    • 2003
  • Fibrous monolithic control of$ Al_2$$O_3$ -$ZrO_2$composite was investigated by multi-pass extrusion process. To obtain sound $Al_2$$O_3$-X $O_2$sintered bodies, burning out and sintering process were carefully carried out. The sintered bodies showed continuous, fibrous monolithic microstructure without any swelling. Many microcracks were observed at the $Al_2$$O_3$-$ZrO_2$interfaces due to the mismatching of thermal expansion coefficient between $Al_2$$O_3$ and $ZrO_2$phase. Most of m- $ZrO_2$grains included twin defects such as (001), (010) and (011) type to accommodate the phase transformation induced stress.