Anesthesia, General ; Hemorrhage ; Humans ; Incidence ; Palatine Tonsil ; Postoperative Hemorrhage ; Tonsillectomy

Among dental traumas, horizontal root fractures are relatively uncommon injuries. Proper initial management and periodical evaluation is essential for the successful treatment of a root-fractured tooth. If pulpal necrosis develops, endodontic treatment is indicated, exclusively for the coronal fragment. Fragment diastases exert a great influence on healing at the fracture line and on pulpal necrosis. An adequately treated root-fractured tooth has a good prognosis. This case report describes the treatment and 2-yr follow up of 3 maxillary central incisors, first with horizontal root fracture, second with horizontal root fracture and avulsion, and third with horizontal root fracture and lateral luxation. All three cases were treated with mineral trioxide aggregate (ProRoot, Dentsply). During 2 yr of follow-up evaluation, the root-fractured teeth of the present patients were well retained in the arch, showing periodontal healing, even after endodontic treatment.
Follow-Up Studies* ; Humans ; Incisor ; Necrosis ; Prognosis ; Tooth ; Tooth Fractures

Simple sequence repeats (SSRs) are ubiquitous short tandem duplications found within eukaryotic genomes. Their length variability and abundance throughout the genome has led them to be widely used as molecular markers for crop-breeding programs, facilitating the use of marker-assisted selection as well as estimation of genetic population structure. Here, we report a software application, "SSR-Primer Generator" for SSR discovery, SSR-primer design, and homology-based search of in silico amplicons from a DNA sequence dataset. On submission of multiple FASTA-format DNA sequences, those analyses are batch processed in a Java runtime environment (JRE) platform, in a pipeline, and the resulting data are visualized in HTML tabular format. This application will be a useful tool for reducing the time and costs associated with the development and application of SSR markers.
Base Sequence ; Computer Simulation ; Genome ; Indonesia ; Microsatellite Repeats ; Polymerase Chain Reaction

BACKGROUND: It is valuable to find the potential activity of regulating the excessive mucin secretion by the compounds derived from various medicinal plants. We investigated whether aqueous extract of the root bark of Morus alba L. (AMA), kuwanon E, kuwanon G, mulberrofuran G, and morusin significantly affect the secretion and production of airway mucin using in vivo and in vitro experimental models. METHODS: Effect of AMA was examined on hypersecretion of airway mucin in sulfur dioxide-induced acute bronchitis in rats. Confluent NCI-H292 cells were pretreated with ethanolic extract, kuwanon E, kuwanon G, mulberrofuran G, or morusin for 30 minutes and then stimulated with phorbol 12-myristate 13-acetate (PMA) for 24 hours. The MUC5AC mucin secretion and production were measured by enzyme-linked immunosorbent assay. RESULTS: AMA stimulated the secretion of airway mucin in sulfur dioxide-induced bronchitis rat model; aqueous extract, ethanolic extract, kuwanon E, kuwanon G, mulberrofuran G and morusin inhibited the production of MUC5AC mucin induced by PMA from NCI-H292 cells, respectively. CONCLUSION: These results suggest that extract of the root bark and the natural products derived from Morus alba L. can regulate the secretion and production of airway mucin and, at least in part, explains the folk use of extract of Morus alba L. as mucoregulators in diverse inflammatory pulmonary diseases.
Animals ; Biological Products* ; Bronchitis ; Enzyme-Linked Immunosorbent Assay ; Ethanol ; Lung Diseases ; Models, Animal ; Models, Theoretical ; Morus* ; Mucins* ; Plants, Medicinal ; Rats ; Sulfur

Inflammatory pseudotumor (IPT) is an uncommon benign neoplasm of unknown etiology presenting as an incidental mass, fever, malaise, anemia, and weight loss. Generally, IPT in the lung is asymptomatic. A case of pulmonary IPT presenting as prolonged fever in a 59 year old man is presented with clinicopathological findings. The patient had been febrile for three months before admission. Five months before admission, a chest X-ray showed a small left pulmonary mass which was regarded as old tuberculosis. An chest X-ray taken on admission revealed a left pulmonary mass two times the size of the one on the first x-ray. Percutaneous needle aspiration and biopsy were performed, and the microscopic examination revealed a plasma cell reaction with myofibroblastic proliferation, consistent with IPT. As prolonged unexplained fever is a frequent symptom in patients with IPTs, this disease entity should be included in the differential diagnosis of fever of unknown origin.
Anemia ; Biopsy ; Diagnosis, Differential ; Fever of Unknown Origin* ; Fever* ; Granuloma, Plasma Cell ; Humans ; Lung ; Middle Aged ; Myofibroblasts ; Needles ; Plasma Cell Granuloma, Pulmonary* ; Plasma Cells ; Thorax ; Tuberculosis ; Weight Loss

Inflammatory pseudotumor (IPT) is an uncommon benign neoplasm of unknown etiology presenting as an incidental mass, fever, malaise, anemia, and weight loss. Generally, IPT in the lung is asymptomatic. A case of pulmonary IPT presenting as prolonged fever in a 59 year old man is presented with clinicopathological findings. The patient had been febrile for three months before admission. Five months before admission, a chest X-ray showed a small left pulmonary mass which was regarded as old tuberculosis. An chest X-ray taken on admission revealed a left pulmonary mass two times the size of the one on the first x-ray. Percutaneous needle aspiration and biopsy were performed, and the microscopic examination revealed a plasma cell reaction with myofibroblastic proliferation, consistent with IPT. As prolonged unexplained fever is a frequent symptom in patients with IPTs, this disease entity should be included in the differential diagnosis of fever of unknown origin.
Anemia ; Biopsy ; Diagnosis, Differential ; Fever of Unknown Origin* ; Fever* ; Granuloma, Plasma Cell ; Humans ; Lung ; Middle Aged ; Myofibroblasts ; Needles ; Plasma Cell Granuloma, Pulmonary* ; Plasma Cells ; Thorax ; Tuberculosis ; Weight Loss

PURPOSE: Standard treatment for cases of non-small cell lung cancer (NSCLC) exhibiting acquired drug resistance includes tumor rebiopsy, epidermal growth factor receptor (EGFR) mutation testing (e.g., for T790M mutations), and the subsequent administration of third-generation EGFR-tyrosine kinase inhibitors (EGFR-TKIs). However, rebiopsies are typically invasive, costly, and occasionally not feasible. Therefore, the present study aimed to assess rebiopsy procedures by analyzing real-world data collected by the ASTRIS study of patients with resistant NSCLC. MATERIALS AND METHODS: The present study used statistical models to evaluate data collected by the ASTRIS trial (NCT02474355) conducted at Yonsei Cancer Center, including the rebiopsy success rate, incidence of T790M mutations in collected tissue and plasma samples, and association of administered osimertinib treatment efficacy. RESULTS: In a total of 188 screened patients, 112 underwent rebiopsy. An adequate tumor specimen was obtained in 95 of these patients, the greatest majority of whom (43.8%) were subjected to bronchoscopy. T790M mutations were detected in 53.3% of successfully EGFR-tested rebiopsy samples. A total of 88 patients received osimertinib treatment, and the objective response rate and median progression-free survival time was 44.3% and 32.7 weeks, respectively, among the treated patients overall, but 57.8% and 45.0 weeks, and 35.2% and 20.4 weeks among patients who exhibited T790M-positive tissue (n=45) and plasma (n=54) samples, respectively. CONCLUSION: Approximately 60% of patients in the analyzed real-world cohort were eligible for tissue rebiopsy upon NSCLC progression. Osimertinib activity was higher in patients in whom T790M mutations were detected in tissues rather than in plasma samples.
Bronchoscopy ; Carcinoma, Non-Small-Cell Lung ; Cohort Studies ; Disease-Free Survival ; Drug Resistance ; Humans ; Incidence ; Models, Statistical ; Phosphotransferases ; Plasma ; Receptor, Epidermal Growth Factor ; Treatment Outcome

Purpose: Anastomotic bleeding after colorectal surgery is a rare, mostly self-limiting, postoperative complication that could lead to a life-threatening condition. Therefore, prompt management is required. This study aimed to evaluate the efficacy and safety of endoscopic clipping for acute anastomotic bleeding after colorectal surgery. Methods: We retrospectively reviewed the data of patients pathologically diagnosed with colorectal cancer at National Cancer Center, Korea from January 2018 to November 2020, which presented with anastomotic bleeding within the first postoperative week and were endoscopically managed with clips. Results: Nine patients had anastomotic bleeding, underwent endoscopic management, and, therefore, were included in this study. All patients underwent laparoscopic (low/ultralow) anterior resection with mechanical double-stapled anastomosis. Anastomotic bleeding was successfully managed through a colonoscopy with clips on the first trial in all patients. Hypovolemic shock occurred in one patient, following anastomotic breakdown. Conclusion Endoscopic clipping seems to be an effective and safe treatment for anastomotic bleeding with minimal physiologic stress, easy accessibility, and scarce postoperative complications. However, a surgical backup should always be considered for massive bleeding.

BACKGROUND: To study clinical characteristics and treatment outcomes of adenocarcinoma of unknown primary site (ACUPS). METHODS: A retrospective analysis of 81 patients who were diagnosed as ACUPS, seen at Samsung Medical Center from May, 1995 to July, 1999, was performed. RESULTS: The median age of the patients was 58 years. The common sites of metastases were the lymph node, liver, lung, bone. In 49 of 81 patients (60.5%), the dominant tumor location was below the diaphragm. The majority of patiens (76 of 81) were initially treated with systemic chemotherapy including cisplatin. Responses were evaluable in 70 of 76. Eighteen of 70 patients (25.7%) responded to chemotherapy and complete remission was observed in 6 patients. The overall median survival of 81 patients was 5.6 months. The median survival of the responding patients was 18.3 months but the median survial of the nonresponding patients was 4.6 months (p<0.01). In univariate and multivariate analysis, age, performance status and response to initial chemotherapy were significant prognostic factors for overall survial. CONCLUSION: Poor survival rate and treatment response were observed in ACUPS but complete response and long-term survival were observed in several patients.
Adenocarcinoma* ; Cisplatin ; Diaphragm ; Drug Therapy ; Humans ; Liver ; Lung ; Lymph Nodes ; Multivariate Analysis ; Neoplasm Metastasis ; Retrospective Studies ; Survival Rate

PURPOSE: Evaluating the risk of lymph node metastasis (LNM) is critical for determining subsequent treatments following endoscopic resection of T1 colorectal cancer (CRC). This study analyzed histopathologic risk factors for LNM in patients with T1 CRC. METHODS: This study involved 745 patients with T1 CRC who underwent endoscopic (n = 97) or surgical (n = 648) resection between January 2001 and December 2015 at the National Cancer Center, Korea. LNM in endoscopically resected patients, which could not be evaluated directly, was estimated indirectly based on follow-up results and histopathologic reports of salvage surgery. The relationships of depth of submucosal invasion, histologic grade, budding, vascular invasion, and background adenoma with LNM were evaluated statistically. RESULTS: Of the 745 patients, 91 (12.2%) were found to be positive for LNM. Univariate and multivariate analyses identified deep submucosal invasion (P = 0.010), histologic high grade (P < 0.001), budding (P = 0.034), and vascular invasion (P < 0.001) as risk factors for LNM. Among the patients with one, two, three, and four risk factors, 6.0%, 18.7%, 36.4%, and 100%, respectively, were positive for LNM. CONCLUSION: Deep submucosal invasion, histologic high grade, budding, and vascular invasion are risk factors for LNM in patients with T1 colorectal cancer. If any of these risk factors are present, additional surgery following endoscopic resection should be determined after considering the potential risk of LNM and each patient's situation.
Adenoma ; Colonoscopy ; Colorectal Neoplasms* ; Follow-Up Studies ; Humans ; Korea ; Lymph Nodes* ; Lymphatic Metastasis ; Multivariate Analysis ; Neoplasm Metastasis* ; Risk Factors*