1.The modification of the silver stain method in sodium dodecyl sulfatepolycarylamine gels for detecting lipopolysaccharides.
Journal of the Korean Society for Microbiology 1993;28(3):193-198
No abstract available.
Gels*
;
Lipopolysaccharides*
;
Silver*
;
Sodium*
2.A Histopathologic, Histochemical and Immunocytochemical Study of Cardiac Myxoma.
Dong Hwan SHIN ; Hee Jeong AHN ; In Joon CHOI
Korean Journal of Pathology 1987;21(2):75-81
The immunoreactivities of surgically removed 16 cardiac myxomas were studies for factor VIII-related Ag (F VIII-RA), Ulex europaeus agglutinin I (UEA-I) and desmin alpha1-antichymotrypsin, and this study was accompained by a clinicopathologic review. More than 50% of the patients with cardiac myxomas were in their fourth and fifth decades, and cardiac myxomas were much more common in women than in men. All but on occurred in the left atrium, and the majority were attached to the atrial septum, usually in the region corresponding to the fossa ovalis. In one case, an atrial myxoma recurred 37 months after the initial excision. Microscopically, the myxomas contained a myxoid matrix composed of acid mucopolysaccharides within which were embedded polygonal cells. The cells forming both the surface and complicated vascular like channels throuhout the myxoid stroma tested positive for F VIII-RA and UEA-I. The outer cell layers of the complex vascular structures demonstrated variable staining for F VIII-RA, while isolated bundles of smooth muscle cells were present and stained for desmin. A small number of the so-called myxoma cells, immunoreactive for alpha1-antichymotrypsin which were not laden with hemosiderin pigment but were similar to histiocytes, were present particularly around the areas of hemorrhage. These findings support the current view that cellular and histologic heterogeneity arose from the divergent differentiation of multipotential mesenchymal cells. In particular, it remains to be confirmed by further study whether or not true histiocytic differentiation occurs.
Female
;
Male
;
Humans
3.Surgical Treatment of Foot Ulcer in Hansen's Disease.
Sung Yul AHN ; Ki Hwan HWANG ; Hyang Joon PARK
Korean Leprosy Bulletin 1999;32(1):1-16
Damages to the sensory, autonomic and motor nerves in leprosy patients are followed by anesthesia, dryness of the skin and muscular paralysis. Most plantar ulcers in leprosy patients are caused by repetitive moderate stress. Minor injuries such as bruising sustained as a result of the misuse of anesthetic limbs may lead to ulceration, scar formation and secondary infection. Cellulitis develops and destroys subcutaneous tissue, resulting in an infection which can reach the bone. As a result of osteomyelitis, bone is absorbed, sequestra are extruded and the architecture of the foot is destructed. The most common sites of the plantar ulceration are over the metatarsal heads, the base of the fifth metatarsal, the base of the proximal phalanx, and the calcaneus. During the past 9 years, we treated 85 patients with ulcers located on the sole and the dorsum of the foot, and lower third of the leg. To prevent osteomyelitis and amputation of the lower leg, we performed various treatment modalities such as free and pedicle flaps, skin grafts, and mechanical stretching devices of the skin (e.g., Sure Closure, Proxiderm, etc), as well as consistent vacuum-assisted closure. We obtained satisfactory results in most cases. We report detailed results and related references.
Amputation
;
Anesthesia
;
Calcaneus
;
Cellulitis
;
Cicatrix
;
Coinfection
;
Extremities
;
Foot Ulcer*
;
Foot*
;
Head
;
Humans
;
Leg
;
Leprosy*
;
Metatarsal Bones
;
Negative-Pressure Wound Therapy
;
Osteomyelitis
;
Paralysis
;
Skin
;
Subcutaneous Tissue
;
Transplants
;
Ulcer
4.A Case of Congenital Atlanto-Occipital Fusion: One case report
Jin Hwan AHN ; Myung Chul YOU ; Suck Hyun LEE ; Bong Kun KIM ; Seung Joon AHN
The Journal of the Korean Orthopaedic Association 1977;12(3):535-538
A cases is reported of congenital atlanto-occipital fusion in a 12-years-old girl. The lesion was treated by occipito-cervical arthrodesis by iliac bone grafting with wiring. The congenital atlanto-occipital fusion has not progressed in this 2 years of observation. This is presented with a review of literature.
Arthrodesis
;
Bone Transplantation
;
Female
;
Humans
5.A Pathological Review of Pleural Effusion by Immunocytochemical Methods.
Dong Hwan SHIN ; Hee Jeong AHN ; Woo Ick YANG ; In Joon CHOI
Korean Journal of Pathology 1990;24(4):476-481
An unequivocal diagnosis of mesothelioma during life, on the basis of limited biopsy tissue or cytological specimens, is frequently difficult and requires distinction from inflammatory mesothelial hyperplasia on the one hand and secondary neoplasms, especially adenocarcinoma on the other. Although some studies have produced conflicting results, it is generally believed that immunohistochemical methods can aid in this distinction. To obtain comparable and reproducible results, 23 metastatic carcinoma of the pleura and 2 unequivocal malignant epiehtlial mesotheliomas were studied by the peroxidase-antiperoxedase method on paraffin-embedded cell blocks, and commercially available antibodies to carcinoembryonic antigen (CEA), keratin and epithelial membrane antigen (EMA) were used. Nineteen metastaic adenocarcinoma (73%) and two mesotheliomas (100%) reacted with keratin and EMA antibodies. Nineteen matastatic adenocarcinomas (73%) reacted with EMA antibodies. Nineteen metastatic adenocarcinoma (73%) reacted with CEA antibody; no mesotheliomas stained for CEA. Two cases of reactive mesothlial hyperplasia showed positive for keratin, but negative reaction for EMA and CEA. Noen of the antibodies used in this study was specific for mesothelioma, but CEA was found to be the most useful marker for differentiating between mesothelioma and metastatic carcinoma.
Adenocarcinoma
;
Biopsy
;
Neoplasm Metastasis
6.A Pathological Review of Pleural Effusion by Immunocytochemical Methods.
Dong Hwan SHIN ; Hee Jeong AHN ; Woo Ick YANG ; In Joon CHOI
Korean Journal of Pathology 1990;24(4):476-481
An unequivocal diagnosis of mesothelioma during life, on the basis of limited biopsy tissue or cytological specimens, is frequently difficult and requires distinction from inflammatory mesothelial hyperplasia on the one hand and secondary neoplasms, especially adenocarcinoma on the other. Although some studies have produced conflicting results, it is generally believed that immunohistochemical methods can aid in this distinction. To obtain comparable and reproducible results, 23 metastatic carcinoma of the pleura and 2 unequivocal malignant epiehtlial mesotheliomas were studied by the peroxidase-antiperoxedase method on paraffin-embedded cell blocks, and commercially available antibodies to carcinoembryonic antigen (CEA), keratin and epithelial membrane antigen (EMA) were used. Nineteen metastaic adenocarcinoma (73%) and two mesotheliomas (100%) reacted with keratin and EMA antibodies. Nineteen matastatic adenocarcinomas (73%) reacted with EMA antibodies. Nineteen metastatic adenocarcinoma (73%) reacted with CEA antibody; no mesotheliomas stained for CEA. Two cases of reactive mesothlial hyperplasia showed positive for keratin, but negative reaction for EMA and CEA. Noen of the antibodies used in this study was specific for mesothelioma, but CEA was found to be the most useful marker for differentiating between mesothelioma and metastatic carcinoma.
Adenocarcinoma
;
Biopsy
;
Neoplasm Metastasis
7.Seborrheic Keratosis: A Clinical and Histopathological Study.
Sung Ku AHN ; Dong Hwan SHIN ; Kwang Gil LEE ; In Joon CHOI
Korean Journal of Pathology 1986;20(4):484-490
A total of 127 cases of seborrheic keratosis examind at the Dept. of Pathology, Yonsei University School of Medicine during 1980~1986 was reviewed. The results were as follow; 1) Sex distribution showed without preponderance with male; Female ratio of 1.05:1. 2) Age distrubution were 10~19 years 0.8%, 20~29 years 4.7%, 30~39 years 14.2%, 40-49 years 25.2%, 50~59 years 29.1%, 60~69 years 17.3%, 70~79 years 6.3% and neck (3.7%). 3) The most common site was face (44.8%), followed by trunk (29.8), lower extremities (10.4%), scalp (6.7%) and neck (3.7%). 4) The clinical diagnoses were sebrorrheic keratosis (47%), nevus (15.4%), verruca (12%), malignant melanoma (7.7%), actinic keratosis (3.4%), pyogenic granuloma (2.6%), mass (2.6%), basal cell epithelioma (0.9%), corn (0.9%), leproy (0.9%), and angiokeratoma (0.9%). 5) The distributions of the light microscopic diagnosis were acanthotic 52 cases (42.9%), hyperkeratotic 33 cases (30%), irritated 17 cases (13.4%), adenoid 15 cases (11.8%), clonal 3 cases (2.4%), melanoacanthoma 1 case (0.8%) and mixed 6 cases (4.7%). 6) The lesions measured from 0.2 cm to 3 cm in maximum diameter and its color was light brown to black with sharply demarcated papule, pladque or nodule.
Female
;
Male
;
Humans
8.Diagnosis of chest injury by abdominal CT scan in multiple injured patients.
Moo Ub AHN ; Sung Oh HWANG ; Kyoung Soo LIM ; Joong Hwan OH ; Seong Joon KANG
Journal of the Korean Society of Emergency Medicine 1991;2(1):91-98
No abstract available.
Diagnosis*
;
Humans
;
Thoracic Injuries*
;
Thorax*
;
Tomography, X-Ray Computed*
9.Ankle-brachial index as a predictor of one-year prognosis in ischemic stroke patients
Hyun Goo Kang ; In Sung Choo ; Bum Joon Kim ; Seong Hwan Ahn
Neurology Asia 2016;21(3):217-224
Objective: Peripheral arterial disease (PAD) reduces functional activity and increases the rate of
cardiovascular death in the elderly. Our study aimed to determine whether the presence of PAD in
stroke patients affected the progression of disability or death one year after discharge. Methods: From
April 2012 to March 2013, consecutive first stroke patients above 50 years of age without known PAD
were enrolled. PAD was defined as a low ankle-brachial index (less than 0.9) measured by an automatic
device. Clinical data associated with the stroke were collected from medical records. Disability in stroke
patients was evaluated with the modified Rankin scale (mRS) on discharge day and one year after the
index stroke. Progression of disability was defined as an increase in mRS more than one level at one
year. Results: Among the 526 patients, 238 had ischemic strokes and underwent ankle-brachial index
(ABI) measurement. Of them, 192 patients were included. In univariate analysis, age, dyslipidemia,
discharge mRS, low-density lipoprotein cholesterol, D-dimer, homocysteine, internal carotid artery
stenosis, posterior cerebral artery stenosis, and PAD were factors associated with worsening mRS.
After adjustment for these factors in the logistic regression analysis, PAD was an independent factor
associated with worsening mRS. In the analysis of one-year mortality, patients with PAD had a higher
death rate, but PAD was not an independent factor after adjusting for other variables.
Conclusions: The presence of PAD in stroke patients suggests a chance of disability progression, but
may not be a predictor of death after one year.
Atherosclerosis
;
Peripheral arterial disease
;
Stroke
10.Synchronous Double Primary Cancer of Esophageal Small Cell Carcinoma and Gastric Adenocarcinoma.
Joon Mo CHUNG ; Yong Hwan CHOI ; Young Oh KWEON ; Young Mee YUN ; Byeong Cheal AHN ; Sung Kook KIM
Korean Journal of Gastrointestinal Endoscopy 1995;15(3):495-500
Double primary cancer means that more than two cancers with different origin exist independently in an individual. The diagnosis of double primary cancer was determined by following criteria. Each of the tumors must present a definite picture of malignancy, and each must be distinct, and the probability of one being a metastasis of the other must be excluded. Small cell carcinoma has a distinct biological behavior such as, early invasion and metastasis, a rapid clinical course, and significant sensitivity to chemotherapy. Small cell carcinoma in the esophagus is relatively rare, and rarer when it is combined with other malignant disease. We have experienced a case of double primary cancer, a 70-year-old man with esophageal small cell carcinoma and gastric adenocarcinoma, which were diagnosed by gastrointestinal endoscopic biopsy. A review of the Korean medical literature failed to reveal any previously described case of esophageal small cell carcinoma with gastric adenocareinoma. We report this case with review of literatures.
Adenocarcinoma*
;
Aged
;
Biopsy
;
Carcinoma, Small Cell*
;
Diagnosis
;
Drug Therapy
;
Esophagus
;
Humans
;
Neoplasm Metastasis