The Use of Fibrin Sealant for the Reduction of Seroma

이택종 대한성형외과학회 2012 Archives of Plastic Surgery Vol.39 No.5

일측 상활차동맥에 의해 공급받는 정중부 도서형 전두피판을 이용한 비재건

이택종 충남대학교 의과대학 지역사회의학연구소 1988 충남의대잡지 Vol.15 No.2

The Koomas of ancient India, members of the caste of potters, had developed the art of reconstructing the destroyed nose by means of a forehead flap, a method often referred to as the Indian method and described in the writings of Sushruta. The skin of the forehead has the same advantages in general as that of the nasolabial fold and cheek in nasal reconstruction as it provides a close color and texture match. A midline forehead flap is a good one for the repair of the nasal defects because it requires few stages, is easy to transfer, is convient for the patient, and produces neither mutilation nor disturbance of the normal wrinkling of the forehead. The flap has a good blood supply from the paired supratrochlear vessels of both sides. The midline island forehead flap with the subcutaneous pedicle differs from the ordinary midline forehead flap by the absence of the usual pedicle of the skin. The island flap provides greater mobility than other type of the forehead flaps because the subcutaneous pedicle is more readily twisted and the skin flap is more easily adjusted into the recipient site. A second appreciable advantage of the island flap is that only one stage is required. Dhawan designed a rather oblique forehead flap situated off the midline, based on a single supratrochlear artery. This departure from the midline flap adds to the length, but it produces on oblique forehead scar which may be more prominent and thus less acceptable. Nevertheless, if the flap is based on one vessel, the protrusion at the root of the nose as a result of the presence of the subcutaneous pedicle will become less prominent than the flap based on bilateral vessels. Moreover the mobility of the flap with one vessel is much greater than the previous island flap. While retaining the advantage of a midline scar, author have used an midline island forehead flap based on a single supratrochlear artery for the reconstruction of various nasal defects. This paper deals with my experience with such a flap in 5 patients.

Volumetric changes of the pedicled transverse rectus abdominis musculocutaneous flap and the contralateral native breast during long-term follow-up

이택종,조정목,Taehee Jo,한우연,Andrés A. Maldonado,엄진섭,김은기 대한미용성형외과학회 2019 Archives of Aesthetic Plastic Surgery Vol.25 No.3

Background Serial volumetric changes of reconstructed breasts have not been studied in detail. In this study, we analyzed serial volumetric changes of reconstructed and contralateral normal breasts during long-term follow-up, with a focus on the effect of various adjuvant therapies. Methods Among all patients who underwent immediate breast reconstruction with a unilateral pedicled transverse rectus abdominis musculocutaneous (p-TRAM) flap, 42 patients with valid data from ≥3 postoperative positron emission tomography-computed tomography (PET-CT) scans were included. The volumes of the reconstructed and normal breasts were measured, and the ratio of flap volume to that of the contralateral breast was calculated. Serial changes in volume and the volume ratio were described, and the effects of chemotherapy, radiation therapy, and hormone therapy on volumetric changes were analyzed. Results The mean interval between the initial reconstruction and each PET-CT scan was 16.5, 30, and 51 months respectively. Thirty-five, 36, and 10 patients received chemotherapy, hormone therapy, and radiation therapy, respectively. The flap volume at each measurement was 531.0, 539.6, and 538.0 cm3, and the contralateral breast volume was 472.8, 486.4, and 500.8 cm3, respectively. The volume ratio decreased from 115.1% to 113.4%, and finally to 109.6% (P=0.02). Adjuvant therapies showed no significant effects. Conclusions We demonstrated that the p-TRAM flap maintained its volume over a long-term follow up, while the volume of the contralateral native breast slowly increased. Moreover, adjuvant breast cancer therapies had no statistically significant effects on the volume of the reconstructed p-TRAM flaps or the contralateral native breasts.

根軌跡을 그리기 위한 論理思考 흐름

李宅鍾 成均館大學校 1980 論文集 Vol.28 No.-

Several papers have been presented with algorithms for obtaining the root locus by the use of digital computers. However, the algorithms thus far presented seem to have difficulties in tracing out the root locus of multiple branches at breakaway/in points, especiarly at multiple branches which are not on real axis. The logic flow presented in this paper will solve the above mentioned difficulty with a reasonable number of computations and a fairly accurate results.

Reducing Donor Site Morbidity When Reconstructing the Nipple Using a Composite Nipple Graft

이택종,Hyung Joo Noh,김은기,엄진섭 대한성형외과학회 2012 Archives of Plastic Surgery Vol.39 No.4

Background Numerous procedures are available for nipple reconstruction without a single gold standard. This study presents a method for reducing donor-site morbidity in nipple reconstruction using a composite nipple graft after transverse rectus abdominis musculocutaneous flap breast reconstruction. Methods Thirty-five patients who underwent nipple reconstruction using a composite nipple graft technique between July of 2001 and December of 2009 were enrolled in this study. To reduce the donor site morbidity, the superior or superior-medial half dome harvesting technique was applied preserving the lateral cutaneous branch of the fourth intercostal nerves. The patients were asked to complete a previously validated survey to rate the color and projection of both nipples, along with the sensation and contractility of the donor nipple; and whether, in retrospect, they would undergo the procedure again. To compare projection, we performed a retrospective chart review of all the identifiable patients who underwent nipple reconstruction using the modified top hat flap technique by the same surgeon and during the same period. Results Thirty-five patients were identified who underwent nipple reconstruction using a composite nipple graft. Of those, 29 patients (82.9%) responded to the survey. Overall,we received favorable responses to the donor site morbidity. Projection at postoperative 6months and 1 year was compared with the immediate postoperative results, as well as with the results of nipples reconstructed using the modified top hat flap. Conclusions The technique used to harvest donor tissue is important. Preserving innervation of the nipple while harvesting can reduce donor site morbidity.

Growth and Physiological Response to Manganese Toxicity in Chinese Cabbage (Brassica rapa L. ssp. campestris)

이택종,Binod Prasad Luitel,강원희 한국원예학회 2011 Horticulture, Environment, and Biotechnology Vol.52 No.3

This study was conducted to assess the effect of manganese (Mn) treatment on the growth and physiological characters of Chinese cabbage (Brassica rapa L. ssp. campestris). Seedlings were transplanted to plastic pots filled with soil and then grown in a plastic house. Four treatments with Mn (control, 15 µM, 300 µM, and 1.5 mM) were applied to plants along with half-strength Hoagland solution. The plant growth characters leaf length, leaf size, chlorophyll content, and fresh and dry weight of shoots and roots decreased significantly with high (1.5 mM) Mn treatment. As the concentration of Mn increased, K, Ca, Mg, Fe, Zn, and Cu content in outer leaves decreased, but the concentration of total N, P, and Mn increased significantly. Chlorophyll a decreased significantly with increasing Mn concentration. Maximum photochemical efficiency (Fv/Fm) was highest (0.893) in the control followed by 15 µM and 300 µM Mn-treated plants, whereas CO2 assimilation decreased with increasing Mn. Total free amino acids also significantly decreased with an increasing Mn. Hence, growth and physiological characters of Chinese cabbage demonstrated tolerance upto 300 µM Mn with nutrient solution in pot culture.

비순부 도서형피판을 이용한 비익 및 비첨의 재건

이택종 충남대학교 의과대학 지역사회의학연구소 1987 충남의대잡지 Vol.14 No.2

Loss of nasal tip and ala has a more disastrous effect on the face than the size of the deformity would suggest, thus reconstruction become vital. Various methods have been developed for nasal reconstruction. Among these are skin graft, composite graft and many local and distant skin flaps. We can select suitable methods considering status of the neighbouring tissue, age, and other clinical situations. The nasolabial flap was originally advocated by Dieeffnbach for the partial reconstruction of nasal ala defects. Recently Herbert and others described anatomy of nasolabial vasculature in detail and possibility of the island flap. This island flap has many advantages, in reliability, location, tissue match, minimal donor defect, ease of performancce. We can also make bilateral flaps. We experienced 6 nasolabial island flaps in 5 patient of nasal ala tip defect. The results were satisfactory and the nasolabial island flap seems to be treatment of choice for these cases.

피판 및 연골점막 이식술을 이용한 하안검의 재건

이택종 충남대학교 의과대학 지역사회의학연구소 1986 충남의대잡지 Vol.13 No.1

Immediate reconstruction of an eyelid is usually called for when the full thickness of the lid is resected to remove a tumor. An eyelid is composed of three layers: an outer layer of skin, an inner layer of mucosa, and a semirigid tarsal plate interposed between them. Therefore, reconstruction of an eyelid requires these three elements. Equally as important as provision of these layers is the need to provide a stable margin-one that will neither turn in or out, and will thus prevent possible damage to the cornea from contact with skin. Skin flaps lined with nasal septal mucochondral graft will meet these requirements. We resected lower eyelid in 5 cases of various carcinoma and recontruct the defect using skin flaps lined with nasal septal grafts. Cheek flaps were used for outer cover and if the cheek flap is not available, a temporal or a forehead flap based upon superficial temporal artery was used.

외측 승모근 근피판에 관한 연구

이택종 충남대학교 의과대학 지역사회의학연구소 1984 충남의대잡지 Vol.11 No.2

Surgical treatment of the defects of the head and neck has improved with advances in the reconstructive techniques especially myocutaneous flaps. Among various myocutaneous flaps, the trapezius myocutaneous flap, which is better known in Argentina by the creator's name i. e. , Demergasso's flap, is formed by the upper and medial portions of the trapezius muscle and an island of the overlying skin of the shoulder. The only significant blood supply for the trapezius musele is provided by the transverse cervical artery most commonly originating from the thyrocervical trunk. It then crosses anterior to the brachial plexus and anterior scalene muscle, crossing above the clavicle, lateral to the border of the levator scapulae muscle, finally dividing into a ascending and a descending branch. Prominent perforating vcssels from the ascending branch extend onto the skin over the acromioclavicular joint. The lateral trapezius myocutaneous flap includes the skin island and the lateral trapezius muscle supplied by the ascending branch of the transverse cervical artery. Defects of the oral cavity, oropharynx, hypopharynx, and skin of the head and neck can be repaired with this versatile flap in a single operative procedure and the flap can be satisfactorily used in patients who have previously received radiation therapy. The trapezius muscle is used to cover and protect the carotid arteries and to add bulk and contour to a dissected neck. We succefully treated the verrucous carcinoma of the tongue and hypopharyngo-cutaneous fistula using lateral trapezius mycoutaneous flap.

구순열 조기수술에 대한 임상연구

이택종 大韓成形外科學會 1995 Archives of Plastic Surgery Vol.22 No.2

Timing of the cleft lip repair is still a subject of debate. This study attempts to define the safety of early cleft lip repair. The study involved a group of 106 consecutive cleft lip repairs performed by the same surgeon between the years of 1987 and 1994. Bilateral and microform cleft lip patients were excluded from the study. Patients with congenital cardiac malformation and those with multiple congenital anomalies were also excluded. All clefts were repaired by means of the rotation-advancement flap procedure. Forty-nine patients were operated on during the first 4 weeks of life; 57 at an older age. There were no operative deaths and only one major complication (endotracheal reintubation due to respiratory depression) occured in the older age group. There were no statistically significant differences in minor wound complication rate between the groups. Early cleft lip repairs during the first 4 weeks of life have proven to be as safe as those done after 4 weeks.