Young Soo Park;Myeong-Cherl Kook;Baek-hui Kim;Hye Seung Lee;Dong-Wook Kang;Mi-Jin Gu;Ok Ran Shin;Younghee Choi;Wonae Lee;Hyunki Kim;In Hye Song;Kyoung-Mee Kim;Hee Sung Kim;Guhyun Kang;Do Youn Park;So-Young Jin;Joon Mee Kim;Yoon Jung Choi;Hee Kyung Chang;Soomin Ahn;Mee Soo Chang;Song-Hee Han;Yoonjin Kwak;An Na Seo;Sung Hak Lee;Mee-Yon Cho;The Gastrointestinal Pathology Study Group of the Korean Society of Pathologists
Journal of Gastric Cancer
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v.23
no.1
/
pp.107-145
/
2023
The first edition of 'A Standardized Pathology Report for Gastric Cancer' was initiated by the Gastrointestinal Pathology Study Group of the Korean Society of Pathologists and published 17 years ago. Since then, significant advances have been made in the pathologic diagnosis, molecular genetics, and management of gastric cancer (GC). To reflect those changes, a committee for publishing a second edition of the report was formed within the Gastrointestinal Pathology Study Group of the Korean Society of Pathologists. This second edition consists of two parts: standard data elements and conditional data elements. The standard data elements contain the basic pathologic findings and items necessary to predict the prognosis of GC patients, and they are adequate for routine surgical pathology service. Other diagnostic and prognostic factors relevant to adjuvant therapy, including molecular biomarkers, are classified as conditional data elements to allow each pathologist to selectively choose items appropriate to the environment in their institution. We trust that the standardized pathology report will be helpful for GC diagnosis and facilitate large-scale multidisciplinary collaborative studies.
You Hoon Kim;Seung Hyun Shin;Hyeri Seok;Dae Won Park;Young Hwan Park;Yoonsun Yoon;Yun-Kyung Kim
Pediatric Infection and Vaccine
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v.30
no.3
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pp.152-158
/
2023
Staphylococcus aureus (SA) is a common cause of skin and soft tissue infections. Panton-Valentine leukocidin (PVL) toxin-producing strain of SA has been discovered worldwide and is known to cause serious infections. However, reports of neonatal infections caused by PVL-positive SA are rare. Here, we report a case of severe skin and soft tissue infection caused by PVL-positive SA in a 7-day-old neonate. The patient was admitted to the emergency room with a history of fever for one day, tenderness, and sensation of buttocks heating. The infant presented with fever, tachycardia, poor general health, progressive tenderness, and edema of the buttocks on the day of admission. Ultrasonography and magnetic resonance imaging revealed necrotizing fasciitis involving the skin, soft tissue, and muscles. Specimens drained from the buttock lesions confirmed the presence of PVL-positive methicillin-resistant SA (MRSA), and there was no bacteremia. She recovered after one month of intravenous antibiotics and surgical drainages. One month after discharge, she was rehospitalized for otitis externa and was infected with MRSA again. Considering the PVL-positive strain, the patient was treated with intravenous linezolid and dressing. The patient underwent decolonization therapy in a 0.5% chlorhexidine bath and recovered completely without sequelae. This case suggests that aggressive drainage and antibiotic treatment are essential for PVL-producing MRSA infections, and additional decolonization is needed to prevent recurrence and community spread.
Jee Hyun Ahn;Jieon Go;Suk Jun Lee;Jee Ye Kim;Hyung Seok Park;Seung Il Kim;Byeong-Woo Park;Vivian Youngjean Park;Jung Hyun Yoon;Min Jung Kim;Seho Park
Korean Journal of Radiology
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v.24
no.5
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pp.384-394
/
2023
Objective: Mammographic density is an independent risk factor for breast cancer that can change after neoadjuvant chemotherapy (NCT). This study aimed to evaluate percent changes in volumetric breast density (ΔVbd%) before and after NCT measured automatically and determine its value as a predictive marker of pathological response to NCT. Materials and Methods: A total of 357 patients with breast cancer treated between January 2014 and December 2016 were included. An automated volumetric breast density (Vbd) measurement method was used to calculate Vbd on mammography before and after NCT. Patients were divided into three groups according to ΔVbd%, calculated as follows: Vbd (post-NCT - pre-NCT)/pre-NCT Vbd × 100 (%). The stable, decreased, and increased groups were defined as -20% ≤ ΔVbd% ≤ 20%, ΔVbd% < -20%, and ΔVbd% > 20%, respectively. Pathological complete response (pCR) was considered to be achieved after NCT if there was no evidence of invasive carcinoma in the breast or metastatic tumors in the axillary and regional lymph nodes on surgical pathology. The association between ΔVbd% grouping and pCR was analyzed using univariable and multivariable logistic regression analyses. Results: The interval between the pre-NCT and post-NCT mammograms ranged from 79 to 250 days (median, 170 days). In the multivariable analysis, ΔVbd% grouping (odds ratio for pCR of 0.420 [95% confidence interval, 0.195-0.905; P = 0.027] for the decreased group compared with the stable group), N stage at diagnosis, histologic grade, and breast cancer subtype were significantly associated with pCR. This tendency was more evident in the luminal B-like and triple-negative subtypes. Conclusion: ΔVbd% was associated with pCR in breast cancer after NCT, with the decreased group showing a lower rate of pCR than the stable group. Automated measurement of ΔVbd% may help predict the NCT response and prognosis in breast cancer.
Objective: To investigate the relationship between 18F-FDG PET/CT semi-quantitative parameters and the International Association for the Study of Lung Cancer, American Thoracic Society/European Respiratory Society (IASLC/ATS/ERS) histopathologic classification, including histological subtypes, proliferation activity, and somatic mutations. Materials and Methods: This retrospective study included 419 patients (150 males, 269 females; median age, 59.0 years; age range, 23.0-84.0 years) who had undergone surgical removal of stage IA-IIIA lung adenocarcinoma and had preoperative PET/CT data of lung tumors. The maximum standardized uptake values (SUVmax), background-subtracted volume (BSV), and background-subtracted lesion activity (BSL) derived from PET/CT were measured. The IASLC/ATS/ERS subtypes, Ki67 score, and epidermal growth factor/anaplastic lymphoma kinase (EGFR/ALK) mutation status were evaluated. The PET/CT semi-quantitative parameters were compared between the tumor subtypes using the Mann-Whitney U test or the Kruskal-Wallis test. The optimum cutoff values of the PET/CT semi-quantitative parameters for distinguishing the IASLC/ATS/ERS subtypes were calculated using receiver operating characteristic curve analysis. The correlation between the PET/CT semi-quantitative parameters and pathological parameters was analyzed using Spearman's correlation. Statistical significance was set at p < 0.05. Results: SUVmax, BSV, and BSL values were significantly higher in invasive adenocarcinoma (IA) than in minimally IA (MIA), and the values were higher in MIA than in adenocarcinoma in situ (AIS) (all p < 0.05). Remarkably, an SUVmax of 0.90 and a BSL of 3.62 were shown to be the optimal cutoff values for differentiating MIA from AIS, manifesting as pure ground-glass nodules with 100% sensitivity and specificity. Metabolic-volumetric parameters (BSV and BSL) were better potential independent factors than metabolic parameters (SUVmax) in differentiating growth patterns. SUVmax and BSL, rather than BSV, were strongly or moderately correlated with Ki67 in most subtypes, except for the micropapillary and solid predominant groups. PET/CT parameters were not correlated with EGFR/ALK mutation status. Conclusion: As noninvasive surrogates, preoperative PET/CT semi-quantitative parameters could imply IASLC/ATS/ERS subtypes and Ki67 index and thus may contribute to improved management of precise surgery and postoperative adjuvant therapy.
Seo Yeon Youn;Dong Hwan Kim;Joon-Il Choi;Moon Hyung Choi;Bohyun Kim;Yu Ri Shin;Soon Nam Oh;Sung Eun Rha
Korean Journal of Radiology
/
v.22
no.8
/
pp.1289-1299
/
2021
Objective: We aimed to evaluate the usefulness of arterial subtraction images for predicting the viability of hepatocellular carcinoma (HCC) after locoregional therapy (LRT) using gadoxetic acid-enhanced MRI and the Liver Imaging Reporting and Data System treatment response (LR-TR) algorithm. Materials and Methods: This study included 90 patients (mean age ± standard deviation, 57 ± 9 years) who underwent liver transplantation or resection after LRT and had 73 viable and 32 nonviable HCCs. All patients underwent gadoxetic acid-enhanced MRI before surgery. Two radiologists assessed the presence of LR-TR features, including arterial phase hyperenhancement (APHE) and LR-TR categories (viable, nonviable, or equivocal), using ordinary arterial-phase and arterial subtraction images. The reference standard for tumor viability was surgical pathology. The sensitivity of APHE for diagnosing viable HCC was compared between ordinary arterial-phase and arterial subtraction images. The sensitivity and specificity of the LR-TR algorithm for diagnosing viable HCC was compared between the use of ordinary arterial-phase and the use of arterial subtraction images. Subgroup analysis was performed on lesions treated with transarterial chemoembolization (TACE) only. Results: The sensitivity of APHE for viable HCCs was higher for arterial subtraction images than ordinary arterial-phase images (71.2% vs. 47.9%; p < 0.001). LR-TR viable category with the use of arterial subtraction images compared with ordinary arterial-phase images showed a significant increase in sensitivity (76.7% [56/73] vs. 63.0% [46/73]; p = 0.002) without significant decrease in specificity (90.6% [29/32] vs. 93.8% [30/32]; p > 0.999). In a subgroup of 63 lesions treated with TACE only, the use of arterial subtraction images showed a significant increase in sensitivity (81.4% [35/43] vs. 67.4% [29/43]; p = 0.031) without significant decrease in specificity (85.0% [17/20] vs. 90.0% [18/20]; p > 0.999). Conclusion: Use of arterial subtraction images compared with ordinary arterial-phase images improved the sensitivity while maintaining specificity for diagnosing viable HCC after LRT using gadoxetic acid-enhanced MRI and the LR-TR algorithm.
Purpose: Lymphedemas are tissue fluid swellings, usually on the arms or legs, and occur as a result of impaired lymphatic drainage. Presently, the most effective treatment available is complete decongestive physiotherapy (CDP). However, this therapy is ineffective in some patients and surgery may be indicated. Herein, we examined the efficacy of minimally invasive needle aspiration of the most enlarged areas in hypodermic adipose tissues, of patients who had failed CDP. Methods: We included 21 patients who were diagnosed with lymphedema stage II-III in the upper or lower extremities and visited the lymphedema clinic at a university hospital from September 1, 2003 to February 28, 2004. All patients had been treated with CDP at least once, but had failed to respond to the therapy for more than one year. Nine patients had breast cancer and 12 had cervical cancer. We identified the area with the most severe edema by using MRI and performed a 16-gauge angio-needle aspiration on the area. The patients were followed up for 3 months. Effectiveness of the treatment was evaluated by comparing the volume of edema before and after the treatment using Wilcoxon signed rank-test. Results: The mean reduction ratio of the volume of edema comparison normal volume was 41.1${\pm}$35.3% (P=0.001). There were no major or minor operative complications except localized hemorrhage. Conclusion: We conclude that a needle aspiration prior to other surgical treatments is relatively safe and effective for those patients who are unresponsive to CDP.
Objectives: Intrahepatic recurrence is the major cause of death among patients with hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC) after curative surgical resection. Several approaches have been reported to decrease the recurrence rate. The objective of our study was to compare the clinical effects of transcatheter arterial chemoembolization (TACE) combined with interferon-alpha (IFN-${\alpha}$) therapy on recurrence after hepatic resection in patients with HBV-related HCC with that of TACE chemotherapy alone. Methods: We retrospectively analyzed the data from 228 patients who were diagnosed with HBV-related HCC and underwent curative resection between January 2001 to December 2008. The patients were divided into TACE (n = 126) and TACE-IFN-${\alpha}$ (n = 102) groups for postoperative chemotherapy. The TACE regimen consisted of 5-fluorouracil (5-FU), cisplatin (DDP), and the emulsion mixed with mitomycin C (MMC) and lipiodol. The recurrence rates, disease-free survival (DFS), overall survival (OS), and risk of recurrence were evaluated. Results: The clinicopathological parameters and adverse effects were similar between the 2 groups (P > 0.05). The median OS for the TACE-IFN-${\alpha}$ group (36.3 months) was significantly longer than that of the TACE group (24.5 months, P < 0.05). The 3-and 5-year OS for the TACE-IFN-${\alpha}$ group were significantly longer than those of the TACE group (P < 0.05) and the recurrence rate was significantly lower (P < 0.05). The TACE and IFN-${\alpha}$ combination therapy, active hepatitis HBV infection, the number of tumor nodules, microvascular invasion, liver cirrhosis, and the BCLC stage were independent predictors of OS and DFS. Conclusions: The use of the TACE and IFN-${\alpha}$ combination chemotherapy after curative hepatic resection safely and effectively improves OS and decreases recurrence in patients with HBV-related HCC who are at high risk. Our findings can serve as a guide for the selection of postoperative adjuvant chemotherapy for patients with HBV-related HCC who are at high risk of recurrence.
With the advent of stage-adapted multimodal regiments for esophageal malignancy, accurate staging has become of utmost importance. Endoscopic ultrasono graphy(EUS) i.: a diagnostic method for the local staging of esophageal cancer, in particular for T and N evaluation. The aim of this study was to examine the diagnostic efficacy of the EUS and to evaluate the relation between prognosis and EUS findings. Material and Method : We reexamined the cases of 88 consecuitive patients who underwent transthroacic esophagectomy and cervical esophagogastrostomy for esophageal cancer from January 1991 to July 2001 We compared EUS findings, histological results and outcomes. Result : There were 83 male(94.3%) and 5 female. Median age was 61.3 years old. Overall staging accuracy were 59.0% for T staging and 76.0% for N staging, In early T staging group, the accuracy was 74.9% except 74 stage. However significant differences were not found in the ability of EUS-determined T-stage and N-Stage to predict survival. Multivariate analysis showed EUS-stage to predict survival. Conclusion : EUS provides a high degree of accuracy in assessing both T and N parameters in staging esophagal cancer. EUS should be performed in all patients with esophageal cancer, not only for staging before therapy, but also as a valuable method of determining prognosis.
Kim Se-Heon;Kim Kwang-Moon;Choi Eun-Chang;Keum Ki-Chang;Koh Yoon-Woo;Hong Won-Pyo
Korean Journal of Head & Neck Oncology
/
v.14
no.2
/
pp.182-190
/
1998
Background: Most of the cancers of maxillary sinus are the squamous variety, but various histopathologic types of malignant tumor can occur in the maxillary sinus. These non-squamous cell tumors have quite different patterns of clinical behavior compared with squamous variety, such as invasive characters, route of metastasis, treatment modality, and so on. Objectives: The authors intend to establish the clinical characteristics and treatment modalities of non-squamous cell tumors of the maxillary sinus. Material and Methods: We experienced 16 cases of non-squamous cell tumors arisen from the maxillary sinus during the 10-year period from 1987 to 1996. We analyzed their clinical features, therapeutic modalities and results with review of literatures. Results: According to AJCC TNM system, 13 patients presented with $T_{1-2}$, 3 with $T_{3-}4$, Two patients were treated with surgery after radiotherapy, 3 patients with surgery after chemotherapy and radiotherapy, 4 patients with chemotherapy and radiotherpy, 5 patients with chemotherapy and radiotherapy after surgery. Conclusion: In cases of adenoid cystic carcinoma, adenocarcinoma and sarcoma, we believe that the best form of therapy is wide surgical excision. If there is microscopic evidence of disease at or close to the resection margin, postoperative radiation was used to achieve better local control. In cases of undifferentiated carcinoma, preoperative chemotherapy and radiation therapy showed improved outcomes.
Background : Complicated exudative pleural fluid collections have traditionally been treated by either closed tube thoracostomy drainage or by open surgical drainage. Complete drainage is important in order to control pleural sepsis, restore pulmonary function, and entrapment. Recently intracavitary fibrinolytic therapy has been advocated as a method to facillitate drainage of complicated exudative pleural effusion and to allow enzymatic debridemant of the restrictive fibrinous sheets covering the pleural surface. The purpose of this study is to prospectively evaluate the effects of image-guided catheter drainage with high dose urokinase(UK) instillation in the treatment of complicated pleural effusions. Patients : Twenty complicated pleural effusion patients that poorly respond to image-guided drainage were allocated to receive UK. There were 8 pneumonia and 12 tuberculosis. Methods : Drugs were diluted in 250 mL normal saline and were infused intrapleurally through the chest tube or pig-tail catheter in a daily dose of 250,000 IU of UK. Response was assessed by clinical outcome, fluid drainage, chest radiography, pleural ultrasound and/or computed tomography. Results : The mean UK instillation time was $1.63{\pm}0.10$. The mean volume drained UK instillation was $381.3{\pm}314.4\;mL$, and post-UK was $321.6{\pm}489.5\;mL$. The follow up duration after UK therapy was mean $212.9{\pm}194.5$ days. We had successful results in 19 cases (95.0%). There were 12 pleural thickenings (60.0%), 2 markedly decreased effusions (10.0%) and 5 cases of no thickening or effusion. There was recurrence after treatment in only one patient(5%) with complicated pleural effusiondue to tuberculosis. Conclusions : Image-guided drainage with high dose UK instillation (250,000 U/day) in complicated pleural effusion is a safe and more effective method than closed thoracostomy drainage. And this management, in turn, can obviate surgery in most cases.
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