Hepatoid thymic carcinoma is an extremely rare subtype of primary thymus tumor resembling “pure” hepatoid adenocarcinomas with hepatocyte paraffin 1 (Hep-Par-1) expression. A 53-year-old man presented with voice change and a neck mass. Multiple masses involving the thyroid, cervical and mediastinal lymph nodes, and lung were detected on computed tomography. Papillary thyroid carcinoma was confirmed by biopsy, and the patient underwent neoadjuvant chemoradiation therapy. However, the anterior mediastinal mass was enlarged after the treatment whereas the multiple masses in the thyroid and neck decreased in size. Microscopically, polygonal tumor cells formed solid sheets or trabeculae resembling hepatocytes and infiltrated remnant thymus. The tumor cells showed immunopositivity for cytokeratin 7, cytokeratin 19, and Hep-Par-1 and negativity for α-fetoprotein. Possibilities of germ cell tumor, squamous cell carcinoma, and metastasis of thyroid papillary carcinoma were excluded by immunohistochemistry. This report on the new subtype of thymic carcinoma is the third in English literature thus far.

Hepatoid thymic carcinoma is an extremely rare subtype of primary thymus tumor resembling “pure” hepatoid adenocarcinomas with hepatocyte paraffin 1 (Hep-Par-1) expression. A 53-year-old man presented with voice change and a neck mass. Multiple masses involving the thyroid, cervical and mediastinal lymph nodes, and lung were detected on computed tomography. Papillary thyroid carcinoma was confirmed by biopsy, and the patient underwent neoadjuvant chemoradiation therapy. However, the anterior mediastinal mass was enlarged after the treatment whereas the multiple masses in the thyroid and neck decreased in size. Microscopically, polygonal tumor cells formed solid sheets or trabeculae resembling hepatocytes and infiltrated remnant thymus. The tumor cells showed immunopositivity for cytokeratin 7, cytokeratin 19, and Hep-Par-1 and negativity for α-fetoprotein. Possibilities of germ cell tumor, squamous cell carcinoma, and metastasis of thyroid papillary carcinoma were excluded by immunohistochemistry. This report on the new subtype of thymic carcinoma is the third in English literature thus far.

The National Cancer Screening Program (NCSP) was established to provide cancer screening services for low-income Medicaid recipients in 1999. Since then, the NCSP has expanded its target population to include National Health Insurance beneficiaries. Currently, the program targets the five most common types of cancer in Korea: stomach, liver, colorectal, breast, and cervical cancer. The National Cancer Center has been involved in developing and revising the practice guidelines for the NCSP in collaboration with the Ministry of Health and Welfare and related academic societies. The main methodological principles of development were determined as follows: an evidence-based approach to the development of recommendations on cancer screening was used, that the recommendation could be drawn by an adaptation process if evidence-based current reliable clinical practice guidelines were available, and that the level of evidence was assessed by methodologies. The process of recommendation development was divided into planning, development, and finalization steps. Planning tasks consisted of selection of clinical practice guideline topics, organization of a clinical practice guideline development group, reviewing the existing clinical practice guidelines, establishment of development plans, and definition of key questions. Development tasks consisted of steps including searching the literature evidence base, assessment of the quality of evidence, integration of evidence, and formulation of recommendations and deciding on the recommendation grade. The finalization tasks included external review, up-dating of the plan, and publication of the clinical practice guidelines.
Breast ; Cooperative Behavior ; Early Detection of Cancer* ; Evidence-Based Medicine ; Health Services Needs and Demand ; Korea ; Liver ; Medicaid ; Methods* ; National Health Programs ; Practice Guidelines as Topic ; Publications ; Social Change ; Social Planning ; Stomach ; Uterine Cervical Neoplasms

Thyroid cancer is the most common malignancy in Korea; in 2012, about 44,000 new cases (19.6% of all malignancies) were registered and the estimated age-standardized incidence rate of thyroid cancer was 73.6 per 100,000 (17.3 and 88.6 per 100,000 in men and women, respectively). Despite the steep increase in its incidence, the age-standardized mortality rate of thyroid cancer has remained stable and 10-year relative survival rate is 99.2%. Increased detection using high-resolution ultrasonography may have contributed to the increased incidence of thyroid cancer if not all. However, the effectiveness of thyroid cancer screening using ultrasonography has not been fully evaluated as to whether screening and early diagnosis could decrease the morbidity or mortality of thyroid cancer. A multidisciplinary expert committee for developing a guideline for thyroid cancer screening was organized and established a recommendation for thyroid cancer screening using ultrasonography in Korea based on scientific evidence for the first time. In conclusion, the current evidence is insufficient to assess the balance of benefits and harms of the thyroid cancer screening by ultrasonography and the recommendation is that thyroid ultrasonography is not routinely recommended for healthy subjects.
Early Detection of Cancer ; Early Diagnosis ; Female ; Humans ; Incidence ; Korea ; Male ; Mass Screening* ; Mortality ; Survival Rate ; Thyroid Gland ; Thyroid Neoplasms* ; Ultrasonography

Multidetector CT (MDCT) gastrography has been regarded as a promising technique for the preoperative imaging of gastric cancer. It has the ability to produce various three-dimensional (3D) images. Because 3D reconstruction images are more effective and intuitive for recognizing abnormal changes in the gastric folds and subtle mucosal nodularity than two-dimensional images, 3D MDCT gastrography can enhance the detection rate of early gastric cancer, which, in turn, contributes to the improvement of the accuracy of preoperative tumor (T) staging. In addition, shaded surface display and tissue transition projection images provide a global view of the stomach, with the exact location of gastric cancer, which may replace the need for barium studies. In this article, we discuss technical factors in producing high-quality MDCT gastrographic images and present cases demonstrating the usefulness of MDCT gastrography for the detection and T staging of gastric cancer while emphasizing the significance of preoperative localization of gastric cancer in terms of surgical margin.
Humans ; Image Processing, Computer-Assisted ; Imaging, Three-Dimensional ; Neoplasm Staging ; Stomach Neoplasms/pathology/*radiography/surgery ; Tomography, X-Ray Computed

Colorectal cancer is the third most common cancer in Korea; it is the second most common cancer in men and the third most common in women. The incidence rate in Korea has continuously increased since 1999 when the National Cancer Registry statistics began. Currently; there are several screening modalities; that have been recommended by expert societies, including fecal occult blood test, colonoscopy, computed tomographic colonography The annual fecal immunochemical test (FIT) has been used in adults aged 50 and older as part of the National Cancer Screening Program in Korea since 2004. Although several study results from regional or national colorectal cancer screening programs in other countries have been reported, the National Cancer Screening Program in Korea has not yet been evaluated with evidence-based methods. Herein report the consensus statements on the National Screening Guideline for colorectal cancer developed by a multi-society expert committee in Korea, as follows: 1) We recommend annual or biennial FIT for screening for colorectal cancer in asymptomatic adults, beginning at 45 years of age and continuing until 80 years (recommendation B). 2) There is no evidence for the risks or benefits of FIT in adults older than 80 years (recommendation I). 3) Selective use of colonoscopy for colorectal cancer screening is recommended, taking into consideration individual preference and the risk of colorectal cancer (recommendation C). 4) There is no evidence for the risks or benefits of double-contrast barium enema for colorectal cancer screening in asymptomatic adults (recommendation I). 5) There is no evidence for the risks or benefits of computed tomographic colonography for colorectal cancer screening in asymptomatic adults (recommendation I).
Adult ; Barium ; Colonography, Computed Tomographic ; Colonoscopy ; Colorectal Neoplasms* ; Consensus ; Early Detection of Cancer ; Enema ; Female ; Humans ; Incidence ; Korea ; Male ; Mass Screening* ; Occult Blood

Breast cancer is the second most common malignancy among Korean women. The 2002 National Cancer Center screening guideline breast cancer was revised via an evidence-based approach to provide medical personnel with a standard protocol of screening breast cancer. There is moderate-level evidence that biennial screening mammography in asymptomatic women aged 40 to 69 reduces breast cancer mortality, while low-level evidence suggests that screening mammography in women 70 years or older does not reduce breast cancer mortality. The committee concluded that the current evidence is insufficient to assess the benefits and harms of either ultrasonography or clinical breast examination as screening modalities for breast cancer. Future researches about the benefits and harms of the National Breast Cancer Screening Program in Korea are strongly required because the characteristics of breast cancer in Korea are different from those in the West, especially regarding dense breast. In conclusion, the committee recommends biennial screening mammography in asymptomatic women aged 40 to 69 years (grade B recommendation). The committee recommends selective screening mammography in women 70 years or older according to individual risk and preference (grade C recommendation). The committee neither recommends nor opposes ultrasonography and clinical breast examination as screening modalities (grade I recommendation). Symptomatic and high-risk women, however, should be offered complementary measures including ultrasonography and clinical breast examination under clinical supervision.
Breast ; Breast Neoplasms* ; Female ; Humans ; Korea ; Mammography ; Mass Screening* ; Mortality ; Organization and Administration ; Ultrasonography

We report on a case of torsion of an accessory spleen occurring in a 19-year-old female. She was admitted with a three-day history of left-upper quadrant pain that became slowly aggravated. On physical examination, left-side abdominal tenderness was observed, most markedly in the left upper quadrant, but no rebound tenderness was noted. Contrast-enhanced computed tomography (CT) scan showed a non-enhancing mass with a tubular vascular pedicle and normal enhancing spleen in the left upper abdomen. Doppler ultrasound showed no vascular flow within the hypoechoic mass in the left upper abdomen. Torsion of an accessory spleen was suspected, and emergent laparoscopic exploration was performed. Laparoscopic exploration showed a large rounded violet mass with a tw isted vascular pedicle, located anterior to the normal spleen. The mass was excised laparoscopically and then removed through a 2.5 cm extended incision of the left-sided trocar incision. Postoperative recovery was normal and she was discharged on the fifth postoperative day.
Abdomen ; Female ; Humans ; Physical Examination ; Spleen* ; Surgical Instruments ; Ultrasonography ; Viola ; Young Adult

We report on a case of torsion of an accessory spleen occurring in a 19-year-old female. She was admitted with a three-day history of left-upper quadrant pain that became slowly aggravated. On physical examination, left-side abdominal tenderness was observed, most markedly in the left upper quadrant, but no rebound tenderness was noted. Contrast-enhanced computed tomography (CT) scan showed a non-enhancing mass with a tubular vascular pedicle and normal enhancing spleen in the left upper abdomen. Doppler ultrasound showed no vascular flow within the hypoechoic mass in the left upper abdomen. Torsion of an accessory spleen was suspected, and emergent laparoscopic exploration was performed. Laparoscopic exploration showed a large rounded violet mass with a tw isted vascular pedicle, located anterior to the normal spleen. The mass was excised laparoscopically and then removed through a 2.5 cm extended incision of the left-sided trocar incision. Postoperative recovery was normal and she was discharged on the fifth postoperative day.
Abdomen ; Female ; Humans ; Physical Examination ; Spleen* ; Surgical Instruments ; Ultrasonography ; Viola ; Young Adult

The aim of this project was to use 3D scanning data collected at incident scenes and various evidence to 1) develop surveying methods based on 3D data consisting of overall and detailed scene evidence, captured by long-range and micros-canner, which can be shared by personnel working in different fields such as forensic medicine, video analysis, physical analysis, traffic engineering, and fire investigation; 2) create digital storage for human skeletons and set the foundation for virtual anthropology; and 3) improve the credibility of 3D evidence by virtual remodeling and simulation of incident scenes and evidence to provide a basis for advanced and high-tech scientific investigation. Two complete skeletons of male and female were scanned using 3D micro-scanner. Each bone was successfully reproduced and assembled in virtual space. In addition, recreating evidence scheduled for invasive examination by creating RP (rapid prototype) was possible. These outcomes could play an important role in setting up the new field of virtual anthropology. Case-specific surveying methods were developed through analysis of 3D scanning data collected by long-range surface scanners at the scenes of vehicular accidents, falls, shootings, and violent crimes. A technique and recording method was also developed for detecting forged seals by micro-scanning the pressure exerted on the seal. Appraisal methods developed in this project could be utilized to secure 3D data of human skeletal remains and incident scenes, create a standard for application, and increase objectivity, reproducibility, and accuracy of scanning methods. We plan to develop case-specific 3D data analysis techniques to improve the credibility of analysis at the NFS and to establish a 3D data collection and analysis team.
Crime ; Data Collection ; Female ; Fires ; Forensic Medicine ; Forensic Sciences ; Humans ; Male ; Skeleton ; Statistics as Topic