1.Incidence estimation of leukemia among Korean children.
Hong Hoe KOO ; Hee Young SHIN ; Hyo Seop AHN ; Yoon Ok AHN
Journal of the Korean Pediatric Society 1992;35(1):80-87
No abstract available.
Child*
;
Humans
;
Incidence*
;
Leukemia*
2.Result of Excimer Laser Photorefractive Keratectomy Correction of Myopia: One and Two-Years Follow-up.
Yoon Koo AHN ; Jung Chul SHIN ; Joon Kiu CHOE
Journal of the Korean Ophthalmological Society 1997;38(4):567-573
To examine prospectively the efficacy and reliability of excimer laser photorefractive keratectomy for myopia. we treated 147 eyes of 86 patients with a VisX Twenty/Twenty excimer laser and followed them up for 1 year and follow up 48 eyes of 26 patients for 2 years. The patients were divided into two groups with preoperative myopia: group 1 with diopters between -1.50 and -6.00, group 2 with diopters between -6.01 and -10.00. At 1 year, the group 1 with a mean preoperative refractive error of -4.61D changed to -0.40D, the group 2 changed from -7.50D to -0.92D. At 2 years, the group 1 with a mean preoperative refractive error of -4.28D changed to -0.41D, the group 2 changed from -7.75D to -1.04D. At 1 yera, in group 1, 90.91% (70 of 77) of eyes and in group 2, 64.29%(45 of 70) of eyes were corrected within 1D of intended refraction,respectively. At 1 years, in group 1, 94.81% (73 of 77) of eyes and in group 2, 84.29%(59 of 70) of eyes achieved an uncorrected visual acuity of 0.5 or better. And at 2 years, in group 1, 81.82% (18 of 22)of eyes, and in group 2, 50.00% (13 of 26) of eyes were corrected within 1D of intended refraction, respectively. At 2 years, in group 1, 95.50% (21% of 22) of eyes and in group 2, 84.62%(22 of 26) of eyes achieved an uncorrected visual acuity of 0.5 or better.
Follow-Up Studies*
;
Humans
;
Lasers, Excimer*
;
Myopia*
;
Photorefractive Keratectomy*
;
Prospective Studies
;
Refractive Errors
;
Visual Acuity
3.Report of A Case of Renal Actinomycosis.
Jung Hoon YOON ; Seong Koo AHN ; Yoo Bock LEE ; Byung Ha CHUNG ; Seung Chul YANG
Korean Journal of Pathology 1986;20(3):383-387
Actinomycosis, in which the principal causative agent in man is known to Actinomyces israelii, is a chronic, suppurative diseases characterized by extensive fibrosis, multiple abscesses, and formation of sinus tracts that drain suppurative exudates. On the basis of the anatomical sites involved; it can be subclassified into the cervicofacial form, which is the most common form, pulmonary form and abdominal form. Kidneys are rarely affected. Clinically, radiologically, and at operation it is difficult to differentiate the renal actinomycosis from renal tuberculosis and renal carcinoma. The prognosis is excellent after nephrectomy followed by appropriate antibiotic therapy. We presented a case of renal actinomycosis with a brief review of the literatures.
Male
;
Humans
4.The Reconstruction of Soft tissue Defect of the Fingerwith Medial Plantar Septo-cutaneous Free Flap.
Min Seok KAE ; Eul Sik YOON ; Sang Hwan KOO ; Duck Sun AHN ; Seung Ha PARK
Journal of the Korean Society of Plastic and Reconstructive Surgeons 1999;26(4):720-724
Various surgical methods have been used to reconstruct severe soft tissue defects of the finger with exposed critical structures such as tendon, bone, and nerve. Some of these methods include rotation flap, cross finger flap, or regional flap similar to neurovascular island flap. However, there were often difficult situations where a flap could not be applied depending on the remaining surrounding tissue, injured area, and size of defect. As a result, free flap or distant flap may become necessary. However, distant flaps often cause stiffness of the finger joints since the hands need to be immobilized for a long time, while standard free flaps may be too thick to cover the finger and cause problems such as morbidities of the donor site. Since May, 1997, at Anam Hospital, we have performed reconstruction on 6 patients with soft tissue defect using a thin, flexible medial plantar septo-cutaneous free flap similar to the volar aspect of the finger in anatomical characteristics of the skin and subcutaneous tissue covering. The vessels used for this flap were superficial branches of medial division of the medial plantar artery and vena comitantes, or the subcutaneous veins. The mean size of the flaps was 2.75cm x 4.25cm. Primary repair or split-thickness skin graft was performed on the donor site depending on the size. All the flaps survived without significant complications, except one case of venous insufficiency. The composition of the transferred flaps was good with the recovery of pain, touch and temperature sensation. A free medial plantar septo-cutaneous flap has several advantages, e.g., it is small in comparison with other standard free flaps, having two draining venous pathways, good color and texture, and a good recovery of protective sensation. This flap can be used for the reconstruction of soft tissue defect on the heel and foot, as well as the volar aspect of fingers.
Arteries
;
Finger Joint
;
Fingers
;
Foot
;
Free Tissue Flaps*
;
Hand
;
Heel
;
Humans
;
Sensation
;
Skin
;
Subcutaneous Tissue
;
Tendons
;
Tissue Donors
;
Transplants
;
Veins
;
Venous Insufficiency
5.Correlation of the Intrapapillary Parameters to Visual Field Defects in Primary Open-Angle Glaucoma.
Yoon Koo AHN ; Ki Bang UHM ; Chul HONG
Journal of the Korean Ophthalmological Society 1997;38(6):1027-1036
The relationship between quantitative structual measurements of the optic nerve head and visual field defects was studied in 150 eyes of 150 patients with primary open-angle glaucoma(POAG). The radius and angle of the optic disc and cup were measured every 30 degrees to obtain rim area, rim area to disc area ratio, cup area, and cup to disc ratio with a computer graphic program(Adobe PhotoshopTM) and the photographic magnification was corrected according to Littmann`s method. The visual field indices including mean deviation(MD) and corrected pattern standard deviation(CPSD), using a Humphrey Field Analyzer(C 302) were obtained. Each intrapapillary parameter showed statistically significant linear correlation with MD. And those disc parameters also significantly correlated with CPSD, although this correlation was relatively lower than that of intrapapillary parameter with MD. Rim area to disc area ratio and MD were most highly correlated(r=0.712, p=0.0001), and correlation of rim are with MD followed next(r=0.670, p=0.0001). These findings suggest that intrapapillary parameters in POAG were more correlated with the overall visual field depression(MD) than the localized visual field change(CPSD). The rim area to disc area ratio rather than the rim area itself, was more related to the diffuse visual field defects.
Computer Graphics
;
Glaucoma, Open-Angle*
;
Humans
;
Optic Disk
;
Radius
;
Visual Fields*
6.A case of cyclic neutropenia.
Yoon Hwa CHA ; Hye Sun LEE ; Young Min AHN ; Myoung Sook KOO
Journal of the Korean Pediatric Society 1993;36(7):1009-1015
Cyclic Neutropenia is a benign, unusual hematologic disorder characterized by regularly recurring episodes of severe neutropenia occurring approximately every 21 days. Beside neutrophils, monocytes, lymphocytes, platelets and reticulocytes all cycle with strict periodicity suggest that this disease should be viewed as cyclic hematopoiesis, not merely as cyclic neutropenia. During neutropenic periods, patients regularly experience aphthous stomatitis, fever, malaise, cervical lymphadenitis, cutaneous infections and occasional pneumonia and otitis media. The exact cause of cyclic neutropenia is unknown. But it is strongly suggested that cyclic neurtopenia is due to an abnormality in the regulation of early hematopoietic precursor cells. We have documented a case of cyclic neutropenia for a period of 2.5 years in a 11 year-old boy who had suffered from recurrent fever, stomatitis, gingival swelling, cervical lymphadenitis and skin infections at 3 weeks intervals since 5 years of age. A brief review of the related literatures is presented.
Child
;
Fever
;
Hematopoiesis
;
Humans
;
Lymphadenitis
;
Lymphocytes
;
Male
;
Monocytes
;
Neutropenia*
;
Neutrophils
;
Otitis Media
;
Periodicity
;
Pneumonia
;
Reticulocytes
;
Skin
;
Stomatitis
;
Stomatitis, Aphthous
7.Three cases of type I von Willebrand disease in a family.
Jie Sun YOON ; Hey Sun LEE ; Young Min AHN ; Myoung Sook KOO ; Sun Yang PARK
Journal of the Korean Pediatric Society 1991;34(3):419-425
No abstract available.
Humans
;
von Willebrand Disease, Type 1*
;
von Willebrand Diseases
8.Three cases of type I von Willebrand disease in a family.
Jie Sun YOON ; Hey Sun LEE ; Young Min AHN ; Myoung Sook KOO ; Sun Yang PARK
Journal of the Korean Pediatric Society 1991;34(3):419-425
No abstract available.
Humans
;
von Willebrand Disease, Type 1*
;
von Willebrand Diseases
9.Scalp Extender for Hair Replacement Surgery and Treatment of Male Pattern Baldness.
Eul Sik YOON ; Sang Whan KOO ; Seung Ha PARK ; Duck Sun AHN ; Byung Kyu SOHN
Journal of the Korean Society of Aesthetic Plastic Surgery 1998;4(1):5-14
Scalp extension involves the continuous nonvolumetric expansion of the hair-bearing scalp, via biologic creep, using implanted surgical device consists of cutting a 5 cm wide strip of plain silastic (0.02 inch thick) from a larger 16x8 inch sheet, then gluing dacron-reinforced silastic strip (5x1 cm, 0.015 inch thich) to the distal ends. A stainless steel plate from hooks is then secured to each end of the extender. During the period from March 1996 to September 1997, 21 patients including 16 patients of male pattern baldness were treated for alopecia of the scalp using internal scalp extender in the department of plastic surgery Korea university hospital. All cases were successfully reconstructed without major complications. It not only reduces the number of scalp reductions and time necessary to totally excise bald vertex scalp, but also appears to decrease the amounts of stretch back and atrophic scarring that may accompany some reductions. Scalp extension appears to be a useful adjunctive technique in hair replacement and reconstructive surgery, and has distinct advantages over standard scalp reduction and tissue expansion techniques.
Alopecia*
;
Cicatrix
;
Hair*
;
Humans
;
Korea
;
Male*
;
Scalp*
;
Stainless Steel
;
Surgery, Plastic
;
Tissue Expansion
10.Detection of Eosinophil in Patient with Allergic Conjunctivitis by Impression Cytology.
Yoon Koo AHN ; Dong Seob KIM ; Jung Chul SHIN ; Jun Kiu CHOE
Journal of the Korean Ophthalmological Society 1997;38(12):2108-2113
Allergic conjunctivitis is commonly encountered in the office parctice of ophthalmology. However, diagnosis is not easy because allergic conjunctivitis shows nonspecific ocular symptoms and signs. And for accurate diagnosis, conjunctival scraping for eosinophils, tear levels of specific IgE, skin testing to aeroallergens, and ocular challenge with allergens are available but these methods are much time and cost consuming. So we evaluate the usefulness of the detection of eosinophils by conjunctival impression cytology. Conjunctival impression cytology was done on 44 eyes of 44 patients who were diagnosed as allergic conjunctivitis. 7 eyes of 7 normal subjects and 14 eyes of 14 patients with epidemic keratoconjunctivits were used as control. Scoring system was defined according to the past history, symptom, sign, and slit lamp finding ranged from +1 to +5. Eyes of score +1 or +2 were defined as allergy suspect group, and eyes of score +3 to +5 defined as allergy group. The sensitivities of the impression dytology were 59% in allergy suspect group, 86% in definite allergy group and 72%in total, The specificity was 95%. According this study, we conclude that impression cytology is a simple, non-invasive and cheap method with high sensitivity and specificity for the diagnosis of allergic conjunctivitis.
Allergens
;
Conjunctivitis, Allergic*
;
Diagnosis
;
Eosinophils*
;
Humans
;
Hypersensitivity
;
Immunoglobulin E
;
Ophthalmology
;
Sensitivity and Specificity
;
Skin Tests