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

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

No abstract available.
Audiometry*

No abstract available.
Bowen's Disease ; Vulva

No abstract available.
Carcinoma, Basal Cell

No abstract available.
Thyroid Gland* ; Thyroid Neoplasms*

Epidural hemangioma is a rare neoplasm which consists of 4% of epidural tumors and 12% of hemangiomas of vertebral column. But most of them are secondary involvement of epidural space by vertebral hemangioma and pure epidural hemangioma is very rare. Reported cases involve thoracic & lumbar level. Neural foramen & paraspinal region are usually invaded by the tumor mass. Clinical symptoms are similar to simple low back pain or disc herniation. Myelography, CT & MRI are helpful to make diagnosis but pathologic finding is important for final diagnosis. Authors are reporting a case of epidural hemangioma which was difficult to differentiate from HIVD by symptomatology & radiologic findings alone.
Diagnosis ; Epidural Neoplasms ; Epidural Space ; Hemangioma ; Low Back Pain ; Magnetic Resonance Imaging ; Myelography ; Spine

Purpose: This study examined the demographic and radiological risk factors for later reduction loss of distal radius fractures treated conservatively. Materials and Methods: This study enrolled patients treated for distal radius fractures between January 2017 and December 2019. Seventy-eight patients were included in the analysis and divided into two groups. The patients who showed minimal reduction loss within an acceptable radiologic angle after initial manual reduction were classified as Group A. The patients who showed reduction loss out of an acceptable radiologic angle and finally malunited or converted to surgical treatments were classified as Group B. The patient’s age and bone marrow density were used as demographic data. The initial X-ray images were evaluated to determine the fracture type. Various radiological parameters were measured. Results: The 78-patient study cohort consisted of nine men and 69 women with a mean age of 67 years. Forty-eight cases were sorted into Group A, and 30 cases into Group B. On logistic regression analysis, the age of 80 or older was a risk factor for later fracture displacement among the demographic factors (p=0.037, odds ratio=4.937). Among the radiographic factors, the presence of distal ulnar fracture and dorsal cortical comminution were disclosed as risk factors of later displacement (p=0.049, 0.003, odds ratio=3.429, 7.196). Conclusion When conservative management for distal radius fracture is decided in patients more than 80 years of age or accompanied by a distal ulnar fracture or with dorsal cortical comminution, the possibility of later displacement of the distal radius should be considered.

Uterine papillary serous carcinoma is a morphologically distinct variant of endometrial carcinoma that is associated with an aggressive behavior with rapid progression and high recurrence, and poor response to salvage treatment. The most common type of malignancy developing in the uterus after radiation therapy is the malignant mixed mullerian tumor, however, the papillary serous carcinomas have rarely been reported.Here we report a case of uterine papillary serous carcinoma which had developed 7 years after radiation therapy for invasive cervical cancer.
Endometrial Neoplasms ; Female ; Recurrence ; Uterine Cervical Neoplasms ; Uterus

Adenoid cystic carcinoma is a rare disease of which incidence is 10-15 % of bartholins gland carcinoma. The clinical presentation is characterized by a vulval mass that existed for a prolonged period to the onset of symptoms, usually infection, pain, and burningsensation Histologically, this tumor is characterized by cribriform pattern cell growing and perineural invasion. The obtaining of clear surgical margins is the most important aspect of treatment. Here we report a case of adenoid cystic carcinoma of the Bartholins gland with a brief review of literature.
Adenoids* ; Carcinoma, Adenoid Cystic* ; Incidence ; Rare Diseases