Objectives: Evolutionary theory is an important biological principle that can be applied in biology and medicine. On the other hand, education on evolution is not widely conducted in medical education. Therefore, this study compared the acceptance and understanding of the concept of evolutionary theory between young medical majors and non-medical majors. Methods: From January to September 2021, participants with a medicine major, a humanities and social science major, and an engineering and natural science major were recruited online.They answered questionnaires about their acceptance, understanding, and interest in evolutionary theory and their religiousness. Results: Two hundred and fifty participants were recruited: 50 in the medicine group, 57 in the humanities and social science group, 123 in the engineering and natural science group, and 20 other majors. The analysis showed that the acceptance and understanding of the evolutionary theory were lower in the medicine group than in the other groups. Conclusion This is the first study to compare the acceptance and understanding of evolutionary theory between the medical majors and non-medical majors in Korea. This result suggests that the education about evolution is very poor and needs to be strengthened in medical education.

no abstract available.

Cohort Studies ; Coinfection ; Hepatitis B virus ; HIV Infections ; HIV ; Humans ; Immunization, Secondary ; Korea ; Parturition ; Prevalence ; Vaccination

Purpose: Mutation of the Kirsten Ras (KRAS) oncogene is present in 30%-40% of colorectal cancers and has prognostic significance in rectal cancer. In this study, we examined the ability of radiomics features extracted from T2-weighted magnetic resonance (MR) images to differentiate between tumors with mutant KRAS and wild-type KRAS. Materials and Methods: Sixty patients with primary rectal cancer (25 with mutant KRAS, 35 with wild-type KRAS) were retrospectively enrolled. Texture analysis was performed in all regions of interest on MR images, which were manually segmented by two independent radiologists. We identified potentially useful imaging features using the two-tailed t test and used them to build a discriminant model with a decision tree to estimate whether KRAS mutation had occurred. Results: Three radiomic features were significantly associated with KRASmutational status (p < 0.05). The mean (and standard deviation) skewness with gradient filter value was significantly higher in the mutant KRAS group than in the wild-type group (2.04±0.94 vs. 1.59±0.69). Higher standard deviations for medium texture (SSF3 and SSF4) were able to differentiate mutant KRAS (139.81±44.19 and 267.12±89.75, respectively) and wild-type KRAS (114.55±29.30 and 224.78±62.20). The final decision tree comprised three decision nodes and four terminal nodes, two of which designated KRAS mutation. The sensitivity, specificity, and accuracy of the decision tree was 84%, 80%, and 81.7%, respectively. Conclusion Using MR-based texture analysis, we identified three imaging features that could differentiate mutant from wild-type KRAS. T2-weighted images could be used to predict KRAS mutation status preoperatively in patients with rectal cancer.

Dementia with Lewy bodies (DLB) is the second most common cause of neurodegenerative dementia. The Dementia with Lewy Bodies Consortium has revised DLB consensus diagnostic criteria. We reviewed recent (fourth) clinical diagnosis criteria and treatment options. The revised DLB clinical criteria included clinical features and updated diagnostic biomarkers. Compared with third criteria, they removed suggestive features and reassigned rapid eye movement sleep behavior disorder (RBD) in core clini-cal features with fluctuating cognition, recurrent visual hallucination, and parkinsonism. They classified biomarkers into two groups, indicative and supportive biomarkers, according to diagnostic specificity and evidence quality. Indicative biomarkers in-cluded reduced dopamine transporter uptake in basal ganglia demonstrated by single-photon emission CT or positron emission tomography, low uptake 123 Iodine- metaiodobenzylguanidine myocardial scintigraphy, and RBD in polysomnography. In treatment of DLB, cholinesterase inhibitor can improve cognitive function and activities of daily living. Neuroleptics should use with caution due to sensitivity in DLB.

From December 2006 to December 2016, 1093 human immunodeficiency virus (HIV) individuals < 70 years enrolled in Korea human immunodeficiency virus/acquired immune deficiency syndrome (HIV/AIDS) cohort were analyzed to investigate the prevalence of HIV/HBV co-infection rate and hepatitis B virus surface antibody (HBsAb) positive rate based on birth year. The HBV co-infection prevalence rate was the highest (8.8%) in patients born between 1960 and 1964 and the lowest (0%) among those born between 1995 and 1999. A decreasing linear trend of HBV co-infection rate was observed according to the 5-year interval changes. HBsAb-positive rate was only 58.1% in our study. The national HBV vaccination programs have effectively lowered the HBV co-infection rate in HIV population. However, it is identified that the HIV population has low HBsAb positive rate. Further evidences supporting efficacy of booster immunization for HBsAb negative HIV patients are required and efforts should be made to increase HBsAb positive rates among HIV patients to prevent horizontal transmission.

In recent decades, laws for involuntary treatment have evolved in ways that protect human rights as well as public safety. Globally, many nations have legislation for psychiatric patients that provide procedural advocacy during their involuntary treatment while a court or another independent organization reviews its lawfulness. In contrast, people with severe mental illness in Korea risk encountering human rights violations and loss of timely treatment, because their involuntary admissions are primarily initiated by family members and civil doctors and not by courts or government. The Mental Health Promotion and Welfare Act, revised in 2016, does not address this fundamental weakness, instead restricting involuntary admission criteria and bypassing the implementation of any procedural assistance programs. Subsequently untreated patients lead to clinical aggravation and even serious felony offenses. This paper introduces New York State’s court-ordered treatment system via the Mental Hygiene Law as a model for the revision of Korean legislation. The findings show that involuntary admissions in New York State are initiated by many parties as well as familial relatives and may be held up to 60 days without any court order.However, patients are assigned legal counsel for the ability to request for a court hearing at any time during their admission. The Assisted Outpatient Program is another legal intervention that requires a person with a mental illness that would likely result in serious harm to self or others to receive supervised outpatient treatment. We argue that the New York State model can be implemented effectively in Korea considering its current medical and judicial status.

Angiofibroma is benign hypervascular tumor that usually occurs in the nasopharynx of adolescent male patient and rarely originates from outside of the nasopharynx, called extranasopharyngeal angiofibroma. The clinical and radiologic findings of extranasopharyngeal angiofibroma are similar to other hypervascular tumors, which may delay diagnosis and treatment. We present a case of extranasopharyngeal angiofibroma arising from nasal septum of a 43-year-old male who complained of right nasal obstruction. Contrast enhancement CT revealed a hypervascular tumor of the nasal septum and the tumor was removed by endoscopic resection. Histopathologic examination confirmed the diagnosis of angiofibroma.