No abstract available.
Reye Syndrome*

Peterson's hernia is an internal hernia that can occur after Roux-en-Y anastomosis. It often accompanies small bowel volvulus and is prone to strangulation. Reconstruction of intestinal continuity after massive small bowel resection in a patient who undergoes near total gastrectomy and Roux-en-Y anastomosis can be difficult. A 74-year-old man who had undergone a near total gastrectomy and Roux-en-Y gastrojejunostomy for stomach cancer presented with abdominal pain. The preoperative computed tomography showed strangulated small bowel volvulus. During the emergent laparotomy, we found a strangulated Peterson's hernia with small bowel volvulus. After resection of the necrotized intestine, we made a new Roux-en-Y anastomosis connecting the remnant stomach and the jejunum with a transverse colon segment. We were safely able to connect the remnant stomach and the jejunum by making a new Roux-en-Y anastomosis utilizing a transverse colon segment as a new Roux-limb by two stage operation.
Abdominal Pain ; Aged ; Anastomosis, Roux-en-Y ; Colon, Transverse* ; Extremities* ; Gastrectomy ; Gastric Bypass ; Gastric Stump ; Hernia* ; Humans ; Intestinal Volvulus* ; Intestines ; Jejunum ; Laparotomy ; Stomach Neoplasms

To estimate the postmortem interval (PMI) by using entomological evidence, species identification of forensically important flies is mandatory. However, the traditional species identification method, which relies on the key morphological features of adult flies, is not always available to investigators and has limitations to the immature samples. Because of these limitations, species identification using DNA sequences has long been an issue in the field of forensic entomology. In this review, I have briefly described the basic principles of molecular species identification and phylogenetic analysis and their applications in forensic entomology. I also recommend an experimental and statistical method to identify unknown fly samples obtained from the field.
Adult ; Base Sequence ; Diptera* ; DNA Barcoding, Taxonomic ; Entomology ; Forensic Sciences ; Humans ; Korea* ; Research Personnel ; Species Specificity

Interferon preparations, in addition to their antiviral properties, may inhibit cell growth and multiplication, enhance the expression of cell surface antigens and influence some functions of T-1ymphocytes, macrophages and natural killer cells. The study was performed in order to investigate the cytolytic effect, antiproli ferative effect and HLA antigen expression effect of the gamma-interferon(IFN- r ) on human melanoma cell line A-375. the cytolytic activities were checked by 'Cr release assay, the antiproliferative activities were analyzed by the 'H-thymidine uptake test and HLA antigen expressions were observed by the indirect imrnuno fluor esent method. The results were as follows : 1. The cytolytic effect of the peripheral rnononuclea.r cells treated with INF- on A 375 human melanoma cell line was increased to 31.4%, 36.5%, 33.9%, 53.9 %, 13.9% respectively in the experiment 1, 2, 3, 4, 5 as compared to control group (-11.4%, 3.6%, 18.5%, 35.5%, 6.7% respectively). 2. 1ri the dose response check of the peripheral mononuclear cells treated with INF r to A 375, the cytolytic effect was definitely observed at 200U/ml concentration of the INF r and maximal effect was observed at 500U/ml concentration. 3. The IIUF r treated natural killer cells did not show any significant increase in cytolytie activity as compared to that of untreated natural killer cell and the same results were obtained with monocytes. This cytolytic activity was significantly increased when INF-r treated natural killer cells were co-culturd with monoeytes. 4. The cyaolytjc activity of natural killer cells was increased at the same degree when using culture supernant of INF- treated monocytes as in the case of using
Antigens, Surface ; Cell Line ; Humans* ; Interferons* ; Killer Cells, Natural ; Macrophages ; Melanoma* ; Monocytes

A 15-year-old female patient had malignant atrophic papulosis(Degos' disease) that affected the skin and probably intestinal tract. She had multiple erythematous papules with porcelain-white atrophic centers on the trunk and extremities. Also she suffered from intermittent nausea, vomiting and abdominal pain. She received appendectomy for abdominal pain 2 months ago. Histopathologic studies showed atrophic epidermis and necrobiotic dermis. There were endothelial thickening, fibrinoid necrosis of bload vessels, perivascular lymphocytic infiltation in the lower dermis. She was treatd with acetyl salicylic acid and dipyridamole, but there was no improvement.
Abdominal Pain ; Adolescent ; Appendectomy ; Dermis ; Dipyridamole ; Epidermis ; Extremities ; Female ; Humans ; Malignant Atrophic Papulosis* ; Nausea ; Necrosis ; Salicylic Acid ; Skin ; Vomiting

No abstract available.
Cisplatin* ; Drug Therapy, Combination* ; Fluorouracil* ; Stomach Neoplasms*

An analytic expression for equivalent square fields and a table are derived using the empirical representations obtained from the measured field size dependence of output for square field in a phantom. The expression is applicable to radiation fields that consistent with the following two assumptions imposed on these representations. 1) It is a linear function of the logarithm of the field area. 2) It is approximately the same function for both square and circular field of similar areas. In this paper, the derived tables and BJR table were consulted.

Dermoid cysts of the posterior fossa are benign, mostly midline, congenital brain neopasm, usually located above or behind the vermis or adjacent meninges2)18)20), Dermoid lesions are slow growing and may become quite large before producing signs and symptoms12). We have recently experienced a case of dermoid which arised in cerebellar hemisphere. A 32-year old woman who had a history of chronic headache at morining was visited in our department and she was also complained of a egg-sized plapable mass which was growing nature, non-tender, soft, and movable on the right occipital area. On admission, there were no specific localizing and lateralizing neurological abnormalities. Unenhanced CT scan shows hypodense mass in the left cerebellar hemisphere and cystic mass at the right occipital scalp(Fig. 1. A). T1-weighted MR image shows hypointense mass in the left cerebellar hemisphere(Fig. 2. A). The Carotid angiography shows non-specific findings. Paramedian suboccipital approach was performed and mass was removed from the lleft cerebellar hemisphere. The cystic scalp mass was removed totally from the left cerebellar hemisphere. The cystic scalp mass was removed totally from the right occipital area. Diagnosis of dermoid cyst was confirmed pathologically by the specimens obtained from two different sites, left cerebellar hemisphere and right occipital ccalp.
Adult ; Angiography ; Brain ; Dermoid Cyst* ; Diagnosis ; Female ; Headache Disorders ; Humans ; Scalp ; Tomography, X-Ray Computed

Congenital smooth musele hamartomas appear at birth as hypertrichotic patches or plaques with or without hyperpigmentation. Histologic characteristic is hyperplasia of dermal smooth muscle bundles. We report a case of congenital smooth muscle harnartoma in 5-year-old female, who showed localized excessive-hairy, skin-colored patch on the lateral surface of left. elbow, which were found at birth. Biopsy specimen showed hyperpigmentation of the basal layers of epidermis, melanophages in upper dermis, and hyperplasia of smooth muscle bundles in lower dermis.
Biopsy ; Child, Preschool ; Dermis ; Elbow ; Epidermis ; Female ; Hamartoma* ; Humans ; Hyperpigmentation ; Hyperplasia ; Hypertrichosis ; Muscle, Smooth* ; Parturition

INTRODUCTION: Although it is well known that medical students are not getting an adequate amount of sleep, there have been only few studies on the sleep patterns of medical students in Korea. Therefore, the present study aimed to investigate the life style and sleep patterns of Korean medical students and the impact they have on the students' academic performance. METHODS: A questionnaire package was administered to the 3rd year medical students at the Seoul National University to examine their sleep patterns on weekdays and weekends. It consisted of questions asking about their lifestyles as well as Pittsburgh sleep quality index (PSQI) and GPA (Grade Point Average) that are considered relevant to their sleep patterns. A total of 110 students (85 males and 25 females, mean age 24.4+/-20.6) responded to the survey and the result was analyzed using the independent t-test, the chi-square test, the paired t-test, Pearson's rank correlation and ANOVA. P-values of less than 0.05 were considered statistically significant in all analyses. RESULTS: The weekend bedtime was significantly delayed (01:24 on weekday; 03:12 on weekend; t=-5.23, p<0.01), the weekend rise time was delayed (07:36 on weekday; 10:30 on weekend; t=-24.48, p<0.01) and the total sleep time was increased on weekends (5:57 on weekday; 8:17 on weekend; t=15.94, p<0.01). They wished to sleep for 7 hours 6 minutes which was different from their actual weekday total sleep time (t=-11.41, p<0.01). The poor sleeper group had lower GPAs than the good sleeper group (t=2.05, p<0.05). The GPA of medical students were negatively correlated with age (r=-0.23, p<0.05), daily amount of smoking (r=-0.78, p<0.01), total amount of smoking (r=-0.75, p<0.01), weekday sleep latency (r=-0.23, p<0.05), weekend sleep latency (r=-0.23, p<0.05) and PSQI score (r=-0.30, p<0.01). CONCLUSION: Medical students were experiencing a lack of sleep during weekdays as they have a later bedtime and earlier rise time, and consequently had more hours of sleep on weekends. Overall, the responded students were experiencing poor sleep quality, and the GPAs of the poor sleeper group were lower than those of the good sleeper group.
Female ; Humans ; Korea ; Life Style ; Male ; Surveys and Questionnaires ; Smoke ; Smoking ; Students, Medical