1.Histologic study of Coral Template Wrapped with Perichondrial Flap.
Ji Soo KIM ; Dae Gu SON ; Ki Hwan HAN ; Dong Won CHOI ; Kwan Kyu PARK
Journal of the Korean Society of Plastic and Reconstructive Surgeons 1999;26(3):392-398
Autogenous costal cartilage graft has been commonly used for reconstruction of auricular deformity. However, the risk of complication and discomfort at the donor site, as well as distortion of the graft due to morphological change in the cartilage have been serious drawbacks to this procedure. Previous studies examining the chondrogenic potential of perichondrium have suggested that perichondrium may be used as graft for cartilage reconstruction. When a perichondrial flap or a free perichondrium was used as graft, new cartilage formed appositional to the grafted perichondrium. However, the neocartilage was often irregular in shape and varied considerably in quantity. In this study, the feasibility of controlling the shape and the mass of neocartilage was investigated using coral, a porous biomaterial, as a template. A coral a template was wrapped with perichondrial flap from the ears of New Zealand white rabbits and placed into a subcutaneous pocket in the rabbits and placed into a subcutaneous pocket in the rabbit's back by incision. A total of 12 animals were used. Formation of new cartilage was later evaluated by gross and histological examination of the perichondrial flap and the coral template. New cartilage was formed in 11 animals. Immature chondrocytes were visible by 3 weeks after the surgery, and by 8 weeks the immature chondrocytes had formed a cartilage. New cartilage was formed only on the surface of the coral template. These results indicated that the shape and the mass of new cartilage may be controlled by using coral template. Therefore, the desired shape of cartilage may be achieved using a coral template of corresponding shape, and this may help in correcting subtle auricular contour defect and in correcting other structural defects that also require new cartilage formation.
Animals
;
Anthozoa*
;
Cartilage
;
Chondrocytes
;
Congenital Abnormalities
;
Ear
;
Humans
;
Rabbits
;
Tissue Donors
;
Transplants
2.Two cases of Dyke-Davidoff-Masson syndrome.
Dong Gun PARK ; Ji Hee PARK ; Kee Hwan YOO ; Ji Tae CHOUNG ; Chang Sung SON ; Young Chang TOCKGO
Journal of the Korean Pediatric Society 1993;36(6):865-869
Dyke-Davidoff-Masson syndrome is a rare disorder which developed hemiatrophy of brain, enlargement of ventricles and prominent pneumatization of petrous pyramid of the temporal bone. It manifests hemiparesis, varying type seizure, and mental retardation. We experienced two cases of Dyke-avidoff-Masson Syndrome, in a 6/12 year-old boy and a 1, 10/12 year-old girl who were admitted to our department of pediatrics, because of convulsion and hemiparesis The brain CT scan showed marked dilatation of lateral ventricle, prominent sylvian fissure and cortical sulci. So we report two cases of Dyke-Davidoff-Masson syndrome with review of literature.
Brain
;
Dilatation
;
Female
;
Humans
;
Intellectual Disability
;
Lateral Ventricles
;
Male
;
Paresis
;
Pediatrics
;
Petrous Bone
;
Seizures
;
Temporal Bone
;
Tomography, X-Ray Computed
3.The Long-Term Clinical Outcomes of Primary PTCA with Heparin-Coated Stent in Acute Myocardial Infarction.
Woong Chol KANG ; Seung Hwan HAN ; Tae Hoon AHN ; Min Soo SON ; Ji Won SON ; Eak Kyun SHIN
Korean Circulation Journal 2004;34(6):540-547
BACKGROUND AND OBJECTIVES: Primary percutaneous coronary intervention (PCI) has been reported to be effective reperfusion therapy for acute myocardial infarction (AMI). In the very thrombotic environment of AMI, primary PCI, with heparin-coated stents, has been known to reduce the early reocclusion of the stented vessel by preventing thrombosis. However, little data exist regarding the long-term clinical outcomes. The aim of our study was to evaluate the safety, feasibility and long-term efficacy of heparin-coated stents in AMI. SUBJECTS AND METHODS: Between January 1998 and July 2002, primary PCI with heparin-coated stents was performed in 132 consecutive patients (98 males, with a mean age of 56.3+/-0.7 years) admitted with the diagnosis of AMI within 12 hours from the onset of the chest pain. Major adverse cardiac events (MACE), including death, MI, TLR (target lesion revascularization) and CABG, were recorded during hospitalization and the follow-up period. Angiograms were obtained at the baseline, after stent implantation and at 6 months following implantation. RESULTS: The angiographic and procedure success rate was 96.2%. During hospitalization, there was no evidence of reocclusion of stented vessel, but 1 patient underwent a repeat PCI due to dissection. There were no bleeding complications. A six-month angiographic follow-up was completed in 47.2% of eligible patients and binary restenosis was present in 20.1%. During the long-term clinical follow-up (mean follow-up period 37.2+/-7.2 months), there were 12 deaths, 1 myocardial infarction and 18 TLR. The MACE free survival rate was 76.5%. CONCLUSION: Primary PCI, with heparin-coated stents, shows favorable long-term clinical outcomes.
Chest Pain
;
Diagnosis
;
Follow-Up Studies
;
Hemorrhage
;
Hospitalization
;
Humans
;
Male
;
Myocardial Infarction*
;
Percutaneous Coronary Intervention
;
Reperfusion
;
Stents*
;
Survival Rate
;
Thrombosis
4.Risk of Gastrointestinal Bleeding Associated with Use of Low-dose Aspirin in Korean Children.
Sun Hwan BAE ; Dong Woo SON ; Kyung Hee PARK
Korean Journal of Pediatric Gastroenterology and Nutrition 2003;6(1):10-16
PURPOSE: To evaluate the risk of gastrointestinal bleeding associated with use of low-dose aspirin in children. METHODS: Among about 250 children who received low-dose aspirin (5 mg/kg/day) under the diagnosis of Kawasaki disease, from March 1995 to May 2001, at Eul-Ji general hospital, 100 children were enrolled in this study. We reviewed the medical records and interviewed the children's parents over the phone to confirm the existence of gross gastrointestinal bleeding. RESULTS: The age of the children at the beginning of medication ranged 4~118 months. About 75% of them was younger than 3 years old. The duration of medication ranged 0.5~17 months. About 70% of the children took the medicine for 2~3 months. Only 1 child (1%) had hematochezia during medication without any accompanying gastrointestinal symptom, and cimetidine for 1 week had cleared up the bleeding. The total duration of medication of 100 children was 341.5 months, and only 1 child had gastrointestinal bleeding. This translates into a rate of clinically significant gastrointestinal bleeding of 3.5 episodes/100 children/year. CONCLUSION: The long-term use of low-dose aspirin is safe, but, is associated with the risk of gastrointestinal bleeding in children. Careful follow-up and efforts to reduce the risk of gastrointestinal bleeding are necessary during long-term low-dose aspirin therapy in children.
Aspirin*
;
Child*
;
Child, Preschool
;
Cimetidine
;
Diagnosis
;
Follow-Up Studies
;
Gastrointestinal Hemorrhage
;
Hemorrhage*
;
Hospitals, General
;
Humans
;
Medical Records
;
Mucocutaneous Lymph Node Syndrome
;
Parents
5.Modified Bilhaut-Cloquet Method for Correction of Bifid Thumb.
Hyung Bin SOHN ; Daegu SON ; Hyun Ji KIM ; Jun Hyung KIM ; Ki Hwan HAN
Journal of the Korean Society of Plastic and Reconstructive Surgeons 2006;33(4):485-490
PURPOSE: As the traditional treatment of the Wassel's type I or II of bifid thumb, Bilhaut-Cloquet, has always been the standard method despite several disadvantages such as tearing of the finger nail, injuries of the growth plate, joint instability, and long visible scarring. To overcome these drawbacks, we applied a modified Bilhaut-Cloquet Method. METHODS: The subjects used for the this study were 10 of 20 patients evaluated. The patients underwent modified methods under every type of Wassel's classification. We designed a central wedge Zig-Zag incision and removed the nail and bony tissues in the remaining digit, but not soft tissue if possible, and transferred the ligaments, tendons, and soft tissue to the remaining thumb from the extra digit. We evaluated the patients' lack of extension, the total ROM of the MP and IP joints, the ROM of IP joints, and the lateral deviations of the reconstructed thumb. RESULTS: The results were encouraging, with all patients showing a good functional and aesthetic outcome. CONCLUSION: The modified method proved a very effective procedure in the treatment of bifid thumb in all types, especially types I or II.
Cicatrix
;
Classification
;
Fingers
;
Growth Plate
;
Humans
;
Joint Instability
;
Joints
;
Ligaments
;
Polydactyly
;
Tendons
;
Thumb*
6.Correction of Deviated Nose: Importance of Rasping of Non-affected Side Nasal Bone Flap and Trimming of Non-affected Side Dorsal Septum.
Ki Hwan HAN ; Min Jae LEE ; Jun Hyung KIM ; Hyun Ji KIM ; Dae Gu SON
Journal of the Korean Society of Plastic and Reconstructive Surgeons 2005;32(6):710-716
A total of 21 patients were operated. Via a columellar labial incision, the upper lateral cartilages were separated from the septum. A submucous resection of the septal cartilage was carried out. After rasping the convex lateral nasal wall of the unaffected side, a low-to-low lateral nasal osteotomy was conducted. Along the deviated dorsal line at the bony vault passing the submucous tunnel, a paramedian nasal osteotomy was performed. The convex side of the nasal bone flap was contoured by rasping. The convex side of the "T"-shaped dorsal septum was trimmed. A total direct septal extension graft of the septal cartilage was done and the alar cartilages were suspended to it. The postoperative results were evaluated by photogrammetric analysis processed by a "neon glow" filter in Adobe Photoshop. The distance from the nasal midline to the most deflective point at 5 levels was measured, and the proportion indices were obtained in regard to intercanthal distance. The results revealed improvement in all levels (p < 0.05), although not perfect. In summary, this technique can result in a clinically good-looking in spite of a slight deflection that still exists.
Cartilage
;
Humans
;
Nasal Bone*
;
Nose*
;
Osteotomy
;
Transplants
7.A Case of Recurrent Dermatofibrosarcoma Protuberans Treated by Mohs Micrographic Surgery Using Rush Permanent Sections.
Jae Eun CHOI ; Ji Hyun JEON ; Soo Hong SEO ; Sang Wook SON ; Il Hwan KIM
Korean Journal of Dermatology 2007;45(2):175-179
Dermatofibrosarcoma protuberans is a dermal spindle cell neoplasm of intermediate malignancy, and is characterized by a high local recurrence rate after surgical excision due to its aggressive, finger-like outgrowth pattern. Mohs micrographic surgery, which ensures complete excision of the tumor and minimizes normal tissue loss, is accepted as the treatment of choice for dermatofibrosarcoma protuberans. However, the use of frozen sections for margin control in dermatofibrosarcoma protuberans is controversial because it could be difficult to differentiate minimal residual tumor from normal skin on the frozen sections, and is more challenging in recurrent disease because of the scar tissue. We report a case of a recurrent dermatofibrosarcoma protuberans in which the tumor was excised using the Mohs surgical technique and margin control was achieved with horizontally-cut paraffin-embedded permanent sections, named as rush permanent sections.
Cicatrix
;
Dermatofibrosarcoma*
;
Frozen Sections
;
Mohs Surgery*
;
Neoplasm, Residual
;
Recurrence
;
Skin
8.Outcome of pelvic arterial embolization for postpartum hemorrhage: A retrospective review of 117 cases.
Ji Yoon CHEONG ; Tae Wook KONG ; Joo Hyuk SON ; Je Hwan WON ; Jeong In YANG ; Haeng Soo KIM
Obstetrics & Gynecology Science 2014;57(1):17-27
OBJECTIVE: The aim of this study was to evaluate indications, efficacy, and complications associated with pelvic arterial embolization (PAE) for postpartum hemorrhage (PPH). METHODS: We retrospectively reviewed the medical records of 117 consecutive patients who underwent PAE for PPH between January 2006 and June 2013. RESULTS: In our single-center study, 117 women underwent PAE to control PPH refractory to conservative management including uterine massage, use of uterotonic agents, surgical repair of genital tract lacerations, and removal of retained placental tissues. Among 117 patients, 69 had a vaginal delivery and 48 had a Cesarean section. The major indication for embolization was uterine atony (54.7%). Other causes were low genital tract lacerations (21.4%) and abnormal placentation (14.5%). The procedure showed a clinical success rate of 88.0% with 14 cases of PAE failure; there were 4 hemostatic hysterectomies and 10 re-embolizations. On univariate analysis, PAE failure was associated with overt disseminated intravascular coagulation (P=0.009), transfusion of more than 10 red blood cell units (RBCUs, P=0.002) and embolization of both uterine and ovarian arteries (P=0.003). Multivariate analysis showed that PAE failure was only associated with transfusions of more than 10 RBCUs (odds ratio, 8.011; 95% confidence interval, 1.531-41.912; P=0.014) and embolization of both uterine and ovarian arteries (odds ratio, 20.472; 95% confidence interval, 2.715-154.365; P=0.003), which were not predictive factors, but rather, were the results of longer time for PAE. Three patients showed uterine necrosis and underwent hysterectomy. CONCLUSION: PAE showed high success rates, mostly without procedure-related complications. Thus, it is a safe and effective adjunct or alternative to hemostatic hysterectomy, when primary management fails to control PPH.
Arteries
;
Cesarean Section
;
Disseminated Intravascular Coagulation
;
Erythrocytes
;
Female
;
Humans
;
Hysterectomy
;
Lacerations
;
Massage
;
Medical Records
;
Multivariate Analysis
;
Necrosis
;
Placentation
;
Postpartum Hemorrhage*
;
Postpartum Period*
;
Pregnancy
;
Retrospective Studies*
;
Uterine Inertia
9.Calcification on the Surface of Silicone Nasal Implants: Regional Properties of Calcification Deposits.
Min Jae LEE ; Hyun Ji KIM ; Ki Hwan HAN ; Jun Hyung KIM ; Dae Gu SON
Journal of the Korean Society of Plastic and Reconstructive Surgeons 2006;33(3):324-329
The silicone rubber implants are widely used in plastic surgery because of various advantages; however, calcification in surface of implant(as a chemical resistance) may transform or destroy the high molecular biomaterial when it stays too long within the human body. The purpose of this study is to determine the relationship between calcification and the histological disparities of the tissues surrounding the area adjoining the silicone nasal implant by examining the regional characteristics of calcium deposits in the silicone nasal implant via elemental analyses using EDX(energy-dispersive X-ray analysis) and ultrastructural analyses using SEM(scanning electron microscopy). The subjects of the study were 19 silicone nasal implants removed by revision rhinoplasty, all displaying calcification. According to the tissue characters, the implant surface was divided into 4 zones with the rhinion as the basis. For each zone, elemental and ultrastructural analyses were performed. Elemental analysis revealed that the calcium deposits consisted of Ca and P only. There were no statistically significant disparities among the ratios between Ca and P according to the zones. Ultrastructural analysis showed acellular mineral-like deposits coalesced to create amorphous deposits in all zones; however, in zones 1 and 3(more pressurized zones by periosteum or nasal bone), additional flaky cylinder-shaped calcium deposits were detected. Thus, it seems that the histological disparities in the surrounding tissues do not affect the components and their proportions in the calcification process. However, it can be inferred that the physical environment due to the histological disparities in the surrounding tissues affects the ultrastructures of calcium deposits.
Calcium
;
Human Body
;
Periosteum
;
Rhinoplasty
;
Silicone Elastomers
;
Surgery, Plastic
10.Forehead Lift using Non-endoscopic Myotomy.
Ki Hwan HAN ; Young Jin JUNG ; Hyun Ji KIM ; Jun Hyung KIM ; Dae Gu SON
Journal of the Korean Society of Plastic and Reconstructive Surgeons 2006;33(1):80-86
The challenge of accurately predicting eyelid height after blepharoptosis surgery is well-known problem even in complete hands. From May 1988 to December 2004, authors reviewed 182 cases(240 eyes) of blepharoptosis corrected by frontalis muscle transfer or levator resection and had experienced 10 cases(15 eyelids) of early reoperation around the first week. The period from initial operation to reoperation are between six to eight days and mean period is seven days. Initial operative procedures were frontalis muscle transfer in 3 cases(4 eyelids) and levator resection in 7 cases(11 eyelids). Follow up period ranged from 6 months to 16 years. Early adjusting surgery was performed in accordance with the preoperative and postoperative degree of ptosis of patient and by previous operative technique. The results are evaluated according to the criteria of an ideal correction by Souther and Jordan. Seven patients have good or satisfactory results(less than 1 mm asymmetry, good in 5 cases and satisfactory in 2 cases). Three patients(5 eyelids) recorded as poor results(more than 2 mm asymmetry). Even if early or late reoperation can be effective in correcting unsatisfactory results after correction of blepharoptosis, early reoperation may lead to better results than late reoperation because early reoperation can offer a reduction in time to final result, the ease with which it is performed and potential cost savings. The experience of surgeon is also important factor for the treat ment of recurred blepharoptosis.
Blepharoptosis
;
Cost Savings
;
Eyebrows
;
Eyelids
;
Follow-Up Studies
;
Forehead*
;
Hand
;
Humans
;
Jordan
;
Reoperation
;
Rhytidoplasty
;
Surgical Procedures, Operative