• Journal of Korean Neurosurgical Society
• /
• 제54권4호
• /
• pp.355-358
• /
• 2013

Spinal extradural arachnoid cyst (SEAC) is a rare disease and uncommon cause of compressive myelopathy. The etiology remains still unclear. We experienced 2 cases of SEACs and reviewed the cases and previous literatures. A 59-year-old man complained of both leg radiating pain and paresthesia for 4 years. His MRI showed an extradural cyst from T12 to L3 and we performed cyst fenestration and repaired the dural defect with tailored laminectomy. Another 51-year-old female patient visited our clinical with left buttock pain and paresthesia for 3 years. A large extradural cyst was found at T1-L2 level on MRI and a communication between the cyst and subarachnoid space was illustrated by CT-myelography. We performed cyst fenestration with primary repair of dural defect. Both patients' symptoms gradually subsided and follow up images taken 1-2 months postoperatively showed nearly disappeared cysts. There has been no documented recurrence in these two cases so far. Tailored laminotomy with cyst fenestration can be a safe and effective alternative choice in treating SEACs compared to traditional complete resection of cyst wall with multi-level laminectomy.

• Journal of Chest Surgery
• /
• 제37권5호
• /
• pp.448-451
• /
• 2004

개심술 후 폐색전증을 동반한 우심방 혈전의 발생 예는 매우 드물다. 10개월 전 심방중격결손 수술을 받았던 54세 여자 환자가 좌측 흉막통과 호흡곤란을 주소로 응급실에 내원하였다. 폐관류주사 검사에서 다발성 분절성 관류 결손 소견을 보였고 경식도 초음파 검사에서 우심방 벽에 위치하는 크고 줄기가 있는 움직이는 종괴가 발견되었다. 헤파린 치료 시작 13일 후 시행한 심초음파 검사에서 크기가 전혀 줄어들지 않아 개심술하에 종괴를 제거하였다. 병리 소견에서 우심방 기질성 혈전으로 밝혀졌고, 수술 후 환자는 별 문제 없이 회복되었으며 퇴원 후 와파린 치료를 받고 있다.

• Journal of Chest Surgery
• /
• 제30권7호
• /
• pp.729-732
• /
• 1997

흉벽에 발생한 악성 말초신경초종은 미국에서 Mark등a(1991)이 17례를 보고하였으나 한국에서는 아직까 지 발표된 예가 없다. 악성 말초신경초종은 악성 연부 육종의 10%에서 발생되며 대개 20세에서 50세 사이에 발생한다. 악성 말 초신경초종은 주로 좌골신경, 상완신경총, 천추총과 연관되어 발생하며, 가장 흔한 발생위치는 상지와 하지 의 근위부, 체간 등이며 드물게는 두경부에도 발생한다. 악성 연부조직 육종의 치료는 저급육종(low grade sarcoma)의 경우는 종양의 절제만으로 치유 가능하나 고급육종(high grade sarcoma)의 경우는 광범위 절제가 요구된다. 저자의 경우에는 50세 남자에서 다발성 거대종괴가 좌측 흉벽에 광범위하게 있었으며 병리소견상 저급 악 성 말초신경초종으로 판명되었다. 종괴들을 절제한후 발생한 흉벽결손은 15$\times$8 cm정도 였으며 Teflon을 이용하여 재건하였다. 수술후 환자 는 큰 문제 얼이 회복되었다.

• Journal of Trauma and Injury
• /
• 제33권2호
• /
• pp.128-133
• /
• 2020

Traumatic abdominal wall hernias (TAWHs) are uncommon and the incidence of this, which is rarely encountered in clinical practice, has been estimated at 1%. Furthermore, blunt transection of the entire abdominal wall musculature caused by seatbelt is a very rare complication. We report a case of adult with a complete disruption of the entire anterolateral abdominal wall muscle following the seatbelt injury. A 32-year-old male was wearing a seat belt in a high speed motor vehicle collision. Abdominal computed tomography (CT) scan revealed the complete disruption of bilateral abdominal wall musculatures including TAWH without visceral injury. However, injuries of small bowel and sigmoid colon were observed in the intra-operative field. The patient underwent the repair by primary closure of the defect with absorbable monofilament sutures. This case suggests that especially in TAWH patients, even if a CT scan is normal, clinicians should keep the possibility of bowel injury in mind, and choose a treatment based on the clinical findings.

• 한국전기전자재료학회:학술대회논문집
• /
• 한국전기전자재료학회 2007년도 추계학술대회 논문집
• /
• pp.79-80
• /
• 2007

To obtain the single crystal thin films, $AgGaSe_2$ mixed crystal was deposited on thoroughly etched semi-insulating GaAs(100) substrate by the hot wall epitaxy (HWE) system. The source and substrate temperatures were $630^{\circ}C\;and\;420^{\circ}C$, respectively. The temperature dependence of the energy band gap of the $AgGaSe_2$ obtained from the absorption spectra was well described by the Varshni's relation, $E_g$(T) = 1.9501 eV - ($8.79{\times}10^{-4}$ eV/K)$T^2$/(T + 250 K). After the as-grown $AgGaSe_2$ single crystal thin films was annealed in Ag-, Se-, and Ga-atmospheres, the origin of point defects of $AgGaSe_2$ single crystal thin films has been investigated by the photoluminescence(PL) at 10 K. The native defects of $V_{Ag},\;V_{Se},\;Ag_{int},\;and\;Se_{int}$ obtained by PL measurements were classified as a donors or acceptors type. And we concluded that the heat-treatment in the Ag-atmosphere converted $AgGaSe_2$ single crystal thin films to an optical p-type. Also, we confirmed that Ga in $AgGaSe_2$/GaAs did not form the native defects because Ga in $AgGaSe_2$ single crystal thin films existed in the form of stable bonds.

• Archives of Plastic Surgery
• /
• 제38권5호
• /
• pp.655-662
• /
• 2011

Purpose: The anterolateral thigh flap is versatile flap for soft-tissue reconstruction for defects located at various sites of the body. This useful flap offers a thick and vascular fascia lata component with large amounts that can be soft tissue coverage for different reconstructive purposes. We present our clinical experience with the use of vascular fascia lata, combined with anterolateral thigh flap for various reconstructive goals. Methods: From April 2008 to February 2011, we transferred anterolateral thigh flaps with fascia lata component to reconstruct soft-tissue defects for different purposes in 11 patients. The fascia lata component of the flap was used for tendon gliding surface in hand/forearm reconstruction in 4 patients, for reconstruction medial and lateral patellar synovial membrane and retinaculum in 2 patients, for reconstruction of plantar aponeurosis in the foot in 2 patients, for reconstruction of fascial and peritoneal defect in the abdominal wall in 2 patient, and for dural defect reconstruction in the scalp in the remaining one. Results: Complete loss of the flap was not seen in all cases. Partial flap necrosis occurred in 2 patients. These complications were treated successfully with minimal surgical debridement and dressing. Infection occurred in 1 patient. In this case, intravenous antibiotics treatment was effective. Conclusion: Anterolateral thigh flap has thick vascular fascia with large amounts. This fascial component of the flap is useful for different reconstructive aims, such as for tendon, ligament, aponeurosis defects, abdominal wall or dura reconstruction. It should be considerated as an important advantage of the flap, together with other well-known advantages.

• BMB Reports
• /
• 제30권3호
• /
• pp.167-172
• /
• 1997

The yeast Saccharomyces cerevisiae, mutant CH117, shows a drug-hypersensitivity (dhs) to cycloheximide, bleomycin, actinomycin D, 5-fluorouracil. nystatin, nigericin and several other antibiotics. CH 117 was also temperature-sensitive (ts). being unable to grow at $37^{\circ}C$ and secreted more invertase and acid phosphatase into the medium than the parent yeast. CH117 grows very slowly and the cell shape is somewhat larger and more sensitive to zymolyase than the wild type cells. Light microscopic and electron microscopic observation also revealed abnormality of the mutant cell wall. These characteristics indicate that CH117 has a defect in an essential component of the cell surface and that the cell wall which performs barrier functions has become leaky in the mutant. We screened a genomic library of wild type yeast for clones that can complement the mutation of CH117. A plasmid, pCHX1, with an insert of 3.6 kilobases (kbs) could complement the dhs and ts of CH117. Deletion and subcloning of the 3.6 kb insert showed that a gene for the complementation of mutant phenotypes was located in 1.9 kbs Puvll-Hindlll fragment.

• Journal of Chest Surgery
• /
• 제29권1호
• /
• pp.115-119
• /
• 1996

방사선 치료 후 발생한 악성 섬유성 조직구종은 아주 드물며 일반적으로 예후가 나쁘다. 52세 남자환자가 6개월 전부터 발견된 흉골부위에 발생한 동통성의 종괴을 주소로 입원하였다. 환자는 5년전 식도암으로 방사선 치료를 받은 병력이 있었다. 종괴는 절개생검상 흥골육종으로 진단되어 항암약물요법을 5회 시행하였으나, 종괴가 점점 커져 수술을 시행하였다. 수술은 흥골을 덮고있는 피부와 늑연골을 포함하여 흥골 전절제술을 시행하였고 이로 인한 결손부위는 자가늑골 이식, 양측 대흥근 근육판과 피부이식으로 흥벽재건술을 시행하였다. 수술후 조직소견은 악성 섬유성 조직구종에 일치하였다. 수술후 경과는 순조로왔으며 36일째에 퇴원하였다.

• Journal of Periodontal and Implant Science
• /
• 제33권4호
• /
• pp.599-613
• /
• 2003

The goal of periodontal treatment is regeneration of the periodontium. Bone graft and absorbable PLA/PGA membrane have been used for this purpose. In this study, 4${\times}$4mm 1-wall intrabony defects were surgically created bilaterally in the mandible of five male beagles. The control group went through a conventional flap operation, while the experimental group I was treated with absorbable PLA/PGA membranes only, group II was treated with absorbable membrane and calcium phosphate. The results are the following : 1. The defect height was 4.82${\pm}$0.45mm in the control group, 4.93${\pm}$0.79mm in the experimental I group, and 4.92${\pm}$0.62mm in the experimental II group. There was no statistically significant difference among 3 groups(P <0.05). 2. The amount of junctional epithelium migration was 30.90${\pm}$9.92% of the defect height in the control group, 39.16${\pm}$7.51% in the experimental I group, and 38.68${\pm}$12.22% in the experimental II group. There was no statistically significant difference among 3 groups(P <0.05). 3. The amount of connective tissue adhesion was 36.38${\pm}$9.03% in the control group, 14.73${\pm}$3.93% in experimental I group, and 27.87${\pm}$9.70% experimental II group. Experimental group I was a statistically significantly different from control group(P <0.05). 4. The amount of new cementum regeneration was 32.92${\pm}$10.51%, 50.04${\pm}$7.61%, and 39.62${\pm}$12.14% for the control, experimental I, and experimental II group respectively. Experimental group I was a statistically significantly different from control group(P<0.05). 5. The amount of new alveolar bone regeneration was 27.24${\pm}$7.49%, 40.75${\pm}$8.03%, and 36.47${\pm}$15.11% for the control, experimental I, and experimental II group respectively. Experimental group I was a statistically significantly different from control group(P <0.05). The results suggest that the use of PLA/PGA membrane in 1-wall intrabony defect of beagle dogs may promote periodontal regeneration. Further studies are required to determine their regeneration effects.

• 한국재료학회지
• /
• 제14권11호
• /
• pp.755-763
• /
• 2004

A stoichiometric mixture of evaporating materials for $CuInse_2$ single crystal thin films was prepared from horizontal electric furnace. To obtain the single crystal thin films, $CuInse_2$ mixed crystal was deposited on thoroughly etched semi-insulating GaAs(100) substrate by the hot wall epitaxy (HWE) system. The source and substrate temperatures were $620^{\circ}C\;and\;410^{\circ}C$, respectively. The temperature dependence of the energy band gap of the $CuInse_2$ obtained from the absorption spectra was well described by the Varshni's relation, $E_{g}(T)=1.1851 eV - (8.99{\times}10^{-4} eV/K)T^2/(T+153 K)$. After the aa-grown $CuInse_2$ single crystal thin films was annealed in Cu-, Se-, and In-atmospheres, the origin of point defects of $CuInse_2$ single crystal thin films has been investigated by the photoluminescence(PL) at 10 K. The native defects of $V_{cu},\;V_{Se},\;Cu_{int},\;and\;Se_{int}$ obtained by PL measurements were classified as a donors or accepters type. And we concluded that the heat-treatment in the Cu-atmosphere converted $CuInse_2$ single crystal thin films to an optical n-type. Also, we confirmed that In in $CuInse_2$/GaAs did not form the native defects because In in $CuInse_2$ single crystal thin films existed in the form of stable bonds.