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Biomedical subjects

S O Choi

Publications and source records attributed to S O Choi.

33 records · Page 2Linked to original sources
PubMed1995

Preduodenal portal vein: a cause of prenatally diagnosed duodenal obstruction.

Preduodenal portal vein is a rare congenital anomaly that causes high intestinal obstruction. The authors report on a newborn who was diagnosed as having duodenal obstruction at 30 weeks' gestation. During surgery the patient was found to have duodenal obstruction caused by a preduodenal portal vein. Malrotation was an associated finding. Treatment consisted of Ladd's procedure and a diamond-shaped duodenoduodenostomy performed anterior to the portal vein.

Adult↗
PubMed1995

On the psychophysics of arm-positioning movements.

The basis for the relationship between physical stimulus and magnitude of psychological response in angular movements of the upper limbs was investigated. Participants compared movements to a standard location with movements to comparison locations and movements of a standard distance with movements of comparison distances. The results add to the controversy surrounding the explanations for the differences in psychological response magnitude of movements to locations and movements across distances. Data obtained from movements to locations and movements across distances indicated similar Weber ratios but different patterns for the just noticeable differences. The data of this and previous research suggest that the application of a prothetic continuum to arm movements is inappropriate. An alternative explanation of the differences in the perception of movements to locations and movements across distances is offered.

Adolescent↗
PubMed1995

A case of Henoch-Schönlein purpura in disseminated tuberculosis.

Tuberculosis is still a common disease, even in some parts of developing countries. Although its major impact is pulmonary, the tuberculosis is actually a disseminated disease. An unusual form of renal involvement of tuberculosis is glomerulonephritis, as a part of systemic vasculitis, Henoch-Schoenlein Purpura (HSP). A 41-year-old man, being treated with antituberculous agents for pulmonary tuberculosis, was transferred to our hospital because of newly developed generalized purpura and pretibial edema. Renal manifestations were proteinuria and hematuria. Renal biopsy disclosed interstitial chronic granulomatous inflammation with caseous necrosis and strong nodular mesangial Ig A deposit, along with trace granular Ig G deposition and perivascular C3 deposit. Skin lesions were non-thrombocytopenic palpable purpurae, proved leukocytoclastic vasculitis by skin biopsy. All clinical symptoms and signs were relieved by antituberculous medication. We concluded that disseminated tuberculosis might be a cause of HSP, an immune complex mediated disease.

Adult↗
PubMed1994

Ultrasound-guided water enema: an alternative method of nonoperative treatment for childhood intussusception.

Ultrasound-guided water enema (USWE) reduction was performed in 115 patients with intussusception, which was diagnosed by ultrasound between April 1988 and August 1992 at Keimyung University Dongsan Medical Center. The overall rate of successful reduction was 80.9%. The rate was 91.0% for patients with symptoms of < or = 24 hours' duration, and 61.1% for patients with symptoms of more than 24 hours' duration (P < .001). Six patients had recurrence during the study period (recurrence rate, 5.2%). There was no perforation or other complications during and after the water enema reduction. The authors conclude that (1) USWE reduction for childhood intussusception has a higher rate of successful reduction and a lower rate of recurrence than does barium enema and (2) USWE is safe and may be an alternative method in the nonoperative treatment of intussusception.

Child, Preschool↗
PubMed1993

Prepubic dermoid sinus: possible variant of dorsal urethral duplication (Stephens type 3).

The authors present the case of 4-month-old girl with a midline prepubic sinus extending from the skin overlying the pubis to the superior surface of the bladder, and continuing to the umbilicus via the median umbilical ligament. The distal portion of the exicised sinus was surrounded by concentric bundles of collagen and smooth muscle with minimal inflammatory infiltrates, which suggests a developmental origin. According to Stephens' classification, the sinus appears to be a variant of dorsal urethral duplication of Stephens type 3.

Cutaneous Fistula↗
PubMed1993

Detection of chromosome aberrations in interphase nuclei using fluorescence in situ hybridization technique.

We report here several experiences of interphase cytogenetics, using fluorescence in situ hybridization (FISH) technique, for the detection of chromosome aberrations. FISH, using alpha satellite specific probes of 18, X, Y chromosomes, was done in interphase nuclei from peripheral blood of patients with Edwards' syndrome, Klinefelter's syndrome and Turner's syndrome with healthy male and female controls, respectively. The distributions of fluorescent signals in 100 interphase nuclei were well correlated with metaphase findings. Nowadays FISH plays an increasingly important role in a variety of research areas, including cytogenetics, prenatal diagnosis, tumor biology, gene amplification and gene mapping.

Adolescent↗
PubMed1993

Enteric duplications in children--an analysis of 6 cases.

This is an analysis of 6 patients with enteric duplications seen over an 8 year period at the Department of Pediatric Surgery, Dongsan Medical Center. They were all males but one. All duplications were cystic, and single except one. Locations of duplications were in the duodenum in one patient, in the jejunum in one, and in the terminal ileum in four. Five of the 6 patients were seen within 1 year of life. Three were newborn infants who had symptoms of intestinal obstruction with palpable mass since birth. Duplication cyst acted as a leading point of intussusception in 4 month and 8 month old infants respectively. One jejunal duplication was found in an 11-year-old boy who had malrotation of the midgut with Ladd's bands. Clinical presentation, embryogenesis of duplication, and management are discussed.

Child↗
PubMed1992

Childhood intussusception: US-guided hydrostatic reduction.

Over a 30-month period, real-time ultrasound (US) was performed in 116 children with suspected intussusception. US findings were positive in all 75 cases of intussusception. Except in one case of transient small-bowel intussusception, the authors immediately attempted US-guided hydrostatic reduction in all cases. Reduction was successful in 63 cases (85%), as demonstrated with US and resolution of signs and symptoms of intussusception. Negative sonograms were confirmed with clinical follow-up. Among 11 failed cases, reduction with barium enema was attempted in six, but all attempts failed. No complications have occurred to date. The authors conclude that US is a reliable diagnostic screening modality in cases of suspected intussusception and that US-guided hydrostatic reduction is a promising technique in nonoperative treatment.

Child↗
PubMed1992

Pediatric gastric volvulus--experience with 7 cases.

Gastric volvulus, organoaxial or mesenterioaxial, is a rare condition in infancy and childhood. We experienced 7 cases of pediatric gastric volvulus, consisting of 3 cases of secondary gastric volvulus due to left diaphragmatic eventration or paraesophageal hernia and 4 cases of idiopathic gastric volvulus. Of 7 cases, five were organoaxial in type and two were mesenterioaxial. The main symptoms of secondary gastric volvulus were vomiting and respiratory difficulty whereas those of idiopathic gastric volvulus were abdominal distension and weight loss with or without failure to thrive. It may be suspected on plain abdominal radiographs and usually confirmed by upper gastrointestinal series. Upper gastrointestinal series in organaxial volvulus demonstrated characteristic findings such as reversal of the greater and lesser curvatures and two air-fluid levels. In mesenterioaxial volvulus, the stomach was rotated into inverted position with pyloroantral obstruction showing a beak appearance. The three patients with secondary volvulus underwent repair of associated defect with or without gastropexy and the 3 patients with idiopathic volvulus underwent anterior gastropexy or gastrostomy. In those with idiopathic gastric volvulus, there was no obvious cause such as laxity of the perigastric ligaments. The operative results were satisfactory except for the three patients with idiopathic gastric volvulus whose abdomen remained distended regardless of weight gain.

Child↗
PubMed1992

Acetylcholinesterase histochemistry of rectal suction biopsies in the diagnosis of Hirschsprung's disease.

Rectal suction biopsy with acetylcholinesterase (AChE) histochemistry has gained increased acceptance as the means of definitely diagnosing Hirschsprung's disease (HD) as well as of excluding this diagnosis when evaluating children with low intestinal obstruction or chronic constipation since the report of Meier-Ruge et al. in 1972. But this AChE histochemical study has not been reported yet in Korea. During the 14-month period from April, 1991 through June, 1992, 37 children, aged 3 days to 17 years had rectal suction biopsies for the diagnosis or exclusion of HD. In this study, AChE histochemistry (N = 37) was compared with hematoxylin & eosin (H&E) staining of same suction biopsy specimens (N = 35) for diagnostic accuracy. The histochemical criterion used for the diagnosis of Hirschsprung's disease was that of Chow et al. (1977), i.e., the presence of many coarse discrete cholinergic fibers in the muscularis mucosae and in the immediately subjacent submucosa regardless of an infiltration of cholinergic fibers in the lamina propria. Of 13 biopsies from the patients with Hirschsprung's disease (N = 13), there were 12 positive reactions, and one false negative reaction in a neonate with total colonic aganglionosis. All biopsies from 24 unaffected children demonstrated negative reactions with no false positive reaction. In comparison, of the 35 specimens examined by H&E staining, ganglion cells were present in the submucosal Meissner's plexus only in 15 of these 24 unaffected children. In conclusion, a 97% diagnostic accuracy was achieved with AChE histochemistry compared with a 74% accuracy with H&E staining (P < 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)

Acetylcholinesterase↗
PubMed1991

Ectopic umbilical liver in conjunction with biliary atresia: uncommon association.

The case of a neonate with an ectopic liver in the umbilicus in conjunction with biliary atresia in the liver proper and an ectopic pancreas in the jejunum is reported. Following excision of the ectopic umbilical liver and Kasai type 1 hepatic portoenterostomy, bile fistula originating in the anterior inferior area of the right lobe of the liver was a complication, and it was successfully treated by construction of hepaticojejunostomy. No similar case has been reported in English language literature. It is of particular interest that the pathological features of the ectopic liver and the liver proper are quite similar.

Biliary Atresia↗
PubMed1991

High jejunal obstruction as a sequela of necrotizing enterocolitis.

A case of high jejunal obstruction due to stricture is reported. It is a rare form of late sequelae of neonatal necrotizing enterocolitis(NEC). Barium contrast study of the small bowel is recommended for earlier diagnosis and treatment before discharge from the hospital, even is an asympto-matic patient.

Child, Preschool↗
PubMed1988

Gastrointestinal phytobezoars in childhood.

We reviewed 33 children under the age of 15 with gastrointestinal phytobezoars. Twenty were boys and 13 were girls. Nearly all patients were observed in late fall and winter. In 22 patients, symptoms developed following ingestion of several ripe or dried persimmons with seeds but none had a history of unripe persimmon ingestion. All patients but three underwent enterotomy, gastrotomy, or enterotomy combined with gastrotomy for bezoar removal. The remaining three had small bowel resection due to strangulation. There was a single location of the bezoar in 85% and multiple locations in 15% at operation. Emergency laparotomy was performed on 25 patients who had typical mechanical intestinal obstruction revealed the plain abdominal films. It is not surprising that persimmon is the most common cause of bezoar formation in Korea, because it is a favorite fruit among Koreans, either in hard, soft, or dried variety.

Adolescent↗