• Title/Summary/Keyword: interstitial lung disease

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Acute Exacerbation of Idiopathic Pulmonary Fibrosis with Lung Cancer: A Comparative Analysis of the Incidence, Survival Rate, and CT Findings with the Patients without Lung Cancer (폐암을 동반한 특발성 폐섬유증 환자에서 폐섬유증의 급성 악화: 폐암 비동반군과의 발병률, 생존율 및 전산화단층촬영 소견의 비교)

  • Bumsang Cho;Hee Kang;Je Hun Kim;Jung Gu Park;Sekyoung Park;Jong Hyouk Yun
    • Journal of the Korean Society of Radiology
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    • v.81 no.3
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    • pp.688-700
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    • 2020
  • Purpose To compare the incidence, survival rate, and CT findings of acute exacerbation (AE) of idiopathic pulmonary fibrosis (IPF) between patients with and without lung cancer. Materials and Methods From June 2004 to July 2018, 89 consecutive patients diagnosed with IPF were included. Among them, 26 patients had IPF with lung cancer (IPF-LCA), and 63 patients had IPF alone. The clinical characteristics and CT findings associated with IPF, lung cancer, and AE were reviewed. Surgery and chemotherapy were performed for 6 and 23 cases of lung cancer, respectively, as the first- or second-line anticancer treatment. The overall survival, CT findings, disease-free period before AE, and duration from the onset of AE to death were compared. Results The incidence of AE was 61.5% in the IPF-LCA group and 58.7% in the IPF group (p = 0.806). The mean overall survival in the IPF-LCA and IPF groups were 16.8 and 83.0 months, respectively (p < 0.001). The mean durations from the start of the lung cancer treatment to the onset of AE were 16.0 and 4.6 months in cases of surgical treatment and chemotherapy, respectively. In comparison of death from AE, the survival rate was significantly lower in the IPF-LCA group than in the IPF group (p = 0.008). In the CT findings associated with AE, the IPF-LCA group tended to have a peribronchial (p < 0.001) or asymmetric distribution (p = 0.016). Conclusion In patients with IPF who develop lung cancer, the rate of death from AE is higher than that in patients with IPF alone. They tend to have unusual CT patterns associated with AE, such as a peribronchial or asymmetric distribution.

Etiological Studies on the Acute Fatal Disease of Angora Rabbits : The So-Called Rabbit Viral Sudden Death (앙고라 토끼의 급성폐사성질병(急性斃死性疾病)의 병인학적(病因學的) 연구(硏究) : 소위(所謂) 토끼의 바이러스성(性) 급사병(急死病))

  • Lee, Cha-soo;Park, Cheong-kyu
    • Korean Journal of Veterinary Research
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    • v.27 no.2
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    • pp.277-290
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    • 1987
  • This paper dealt with etiological studies on the acute fatal disease of Angora rabbits occurring as a group in Korea. The disease was confirmed as an acute infectious disease caused by virus. The results obtained were summarized as follows: The disease produced a high morbidity in the rearing Angora rabbits and a high mortality in the infected rabbits, and was acute. The infected rabbits died soon without premonitory signs after inappetence. The body temperature of the affected rabbits rose to $40^{\circ}C$ and nearly all deaths occurred within 48 hours after inoculation. In many cases a bloody foam was visible from the nostrils after death. According to the progress of the disease the nervous signs, such as ataxia, paralysis of the legs, and torticollis could be recognized in the some cases. Rabbits that had recovered from the disease were severe emaciation, and bristly and sparse hairs. In macroscopical findings, there were hemorrhage and edema of the lung, hemorrhage or hyperemia of the tracheal and broncheal mucosae, appearance of blood-tinged effusion in the respiratory tract. The principal lesions were found in the liver. Usually the lobular necrosis of the liver cells was progressed, and focal necrosis and hemorrhagic spots of various sizes were often observed in the liver. Liver was as a whole pale. In chronic cases, however, there was a slight liver cirrhosis with the atrophy of the parenchymal cells. The other lesions encountered grossly consisted of swelling and petechiae of the kidney, hyperemia and hemorrhage of the spleen, catarrh of the small intestine, and hyperemia of the brain. The urinary bladder contained a lot of turbid urine or bloody urine and urinary cast, and was distended with the urine. In microscopical findings, the most striking lesions occurred in the liver and may be classified as viral hepatitis. The hepatic lesions were initially characterized by progression from periportal to peripheral necrosis of the lobules with the infiltration of mononuclear cells. Focal necrosis of various sizes, hemorrhage and hyperemia were often observed in the hepatic lobules. In chronic cases, there were intensive infiltration of lymphocytes, proliferation of fibroblasts, appearance of plasmal cells, and atrophy of parenchymal cells in the hepatic tissue. Perivascular lymphocytic infiltration and meningitis were seen in the brain and spinal cord. In the kidney, there were acute glomerulonephritis, hemorrhage, necrosis of the uriniferous tubules, and retention of eosinophilic substance within the renal tubules. Proliferation of fibroblasts and infiltration of mono-nuclear cells were found in the interstitial stroma of the kidney in chronic case. There were also hemorrhage and edema in the lung, hyperemia and hemorrhage in the trachea and bronchus, perivascular lymphocytic infiltration and focal myocardial necrosis in the heart, hyperemia and hemorrhage in the spleen, vacuolization and desquamation of mucous epithelia in the urinary bladder, catarrhal inflammation of the small intestine, hemorrhage in the adrenal cortex and hyperemia in the other organs. In the electron microscopical findings of the hepatic tissue, crystals of viral particles appeared in the cytoplasm of the hepatocytes and the sinusoidal endothelial cells, and the viral particles, were small in size and polygonal. The authors suppose the virus may belong to picornaviridae family of RNA viruses. Also immature virus-like particles, dilated rough endoplasmic reticulum and destruction of nuclear membrane were seen in the hepatocytes. From these results, it is concluded that the sudden death is an acute viral disease characterized by hepatitis and the affected rabbits may be died of viremia.

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Comparison of immune cell populations in bronchoalveolar lavage cells and PBMC cytokine expressions in porcine reproductive and respiratory syndrome and porcine respiratory disease complex

  • Yang, Myeon-Sik;Jeong, Chang-Gi;Nazki, Salik;Mattoo, Sameer ul Salam;Lee, Sang-Myeong;Kim, Won-Il;Kim, Bumseok
    • Korean Journal of Veterinary Service
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    • v.42 no.4
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    • pp.201-216
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    • 2019
  • Porcine reproductive and respiratory syndrome (PRRS) is characterized by reproductive failure in sows and respiratory distress in all age pigs. Porcine respiratory disease complex (PRDC) is a disease caused by opportunistic bacterial infection secondary to a weakened immune system by a preceding respiratory infection. In this study, we tried to compare the immune responses in PRRS and PRDC groups to clearly characterize the disease severity. Eighty-five pigs were infected with various Korean field PRRS virus strains. Infected animals were classified into PRRS (n=32) and PRDC (n=53) groups based on lung lesions such as interstitial pneumonia, suppurative pneumonia, and pleuropneumonia. The immune cell population of bronchoalveolar lavage cells (BALc) was evaluated on 14 and 28 days post infection (dpi) and PMBC cytokine expression was measured on 0, 3, 7, 14 dpi to investigate early inflammatory reactions. Pulmonary lesion severity was negatively correlated with alveolar macrophage (AM) in both PRRS and PRDC groups on 14 and 28 dpi. AM in BALc was less populated in PRDC group on 28 dpi compared to PRRS group. AM in BALc was significantly less populated in PRDC group on 28 dpi compared to 14 dpi. In addition, cytotoxic T lymphocyte (CTL) in BALc was higher populated in PRDC group on 14 dpi and 28 dpi compared to PRRS group. In the case of PBMC cytokine TNF-α, IFN-α, IL-1β, IFN-γ, FoxP3, and IL-2, the PRRS group showed higher expression than the PRDC group on 7 dpi, 14 dpi, 7 dpi, 14 dpi, 14 dpi, and 14 dpi, respectively. On the other hand, in the case of IFN-β, IL-6, IL-8, IL-4, and IL-17, the PRDC group showed higher PBMC cytokine expression at 14 dpi, 7 dpi, 14 dpi, 3 dpi, and 3 dpi, respectively, than the PRRS group. Based on these results, our study could characterize differential immune responses in pigs with PRRS or PRDC.

Isolation and immunohistochemical diagnosis of Haemophilus parasuis from naturally occurring polyserositis in pigs (자연발생한 돼지 다발성 장막염 예로부터 Haemophilus parasuis의 분리와 면역조직화학적 진단)

  • Bae, You-chan;Kang, Mun-il;Hwang, Eui-kyong;Sohn, Hyun-joo;Choi, Sang-ho
    • Korean Journal of Veterinary Research
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    • v.38 no.4
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    • pp.843-852
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    • 1998
  • From Jan. 1996 to Oct. 1997, 29 pigs with 40-70 days old showing dyspnea inappetite and polyserositis were collected and carried out necropsy, bacterial culture, histopathology, avidin biotin complex(ABC) stain, fluorescent antibody(FA) test, and electron microscopy. In the study, 4 strains from 3 pigs were isolated from meninges, pleura and synovial fluid and also were identified as Haemophilus parasuis serovar 5. Main histopathological lesions of 29 pigs with polyserositis were frequently composed of fibrinous peritonitis(27), pleurisy(22), interstitial pneumonia(21), fibrinous epicarditis(20), fibrinopurulent meningitis(8) and synovitis(4). By ABC stain, 11/29(37.9%) pigs with polyserositis were confirmed to have H parasuis serovar 5 in the cytoplasm of macrophages and neutrophils in cerebral meninges, epicardium, pleura surface of lung or serosa of spleen. ABC stain(20.8~40.0%) to detect H parasuis serovar 5 in tissues was more sensitive than bacterial culture(10.3%), but less sensitive than FA test(62.5%) using frozen tissues even though the result of 8 cases. By electron microscopy, a bacterium was also detected in the cytoplasm of macrophages in purulent exudate of cerebral meninges. Consequently, we confirmed that H parasuis serovar 5 has been involving to cause pigs with polyserositis and can be detected by FA and ABC stain as reliable diagnostic tools.

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Survey on environmental condition and health state of laboratory mouse in conventional facility (일반시설에서 사육되는 마우스의 품질향상을 위한 기초조사 연구)

  • Lee, Heungshik S.;Seung, Rho Hyun;Kim, Kyungjin;Kim, Chul-kyu
    • Korean Journal of Veterinary Research
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    • v.40 no.3
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    • pp.611-625
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    • 2000
  • For the improvement of quality control of laboratory mouse, we investigated the environmental condition, histopathological findings and serological test using ELISA to mouse hepatitis virus(MHV), Mycoplasma pulmonis(MP), Clostridium piliforme(TZ) and Sendai virus (HVJ) of ICR, C57BL/6, CBA and C3H/He mice that were supplied from conventional laboratory animal facility. 1. The ammonia concentration of facility was below the recommended concentration, 15ppm, by the KNIH, and the room temperature($21{\sim}23^{\circ}C$) and relative humidity(40~60%) was optimum range recommend by the Ministry of Health and Welfare, respectively. 2. The incidence rate of inapparent disease was 86.6% and the major findings in the liver were vacuolar degeneration with nucleic pleomorphism. The lung was shown the thickening of alveolar wall and interstitial pneumonia with congestion. The kidney and spleen were observed the mild congestion and extramedullary hematopoiesis, respectively. 3. The positive reaction rates against MHV and MP in serological test was 97.9% and 37.5%, respectively but HVJ and TZ were negative. These results suggest that laboratory mice could be infected with MHV and MP under conventional environments. Therefore we recommend to select thoroughly inapparent infected mice and to convert conventional system into SPF facility as soon as possible.

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Fcγ Receptors Modulate Pulmonary Inflammation by Activating Innate Immune Cells in Murine Hypersensitivity Pneumonitis

  • Park, Hyo Jin;Kim, Hye Sung;Chung, Doo Hyun
    • IMMUNE NETWORK
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    • v.10 no.1
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    • pp.26-34
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    • 2010
  • Background: Hypersensitivity pneumonitis (HP) is an interstitial lung disease that develops following repeated exposure to inhaled particulate antigens. The family of $Fc{\gamma}$ receptors ($Fc{\gamma}Rs$) has emerged as central regulators for modulating both pro-and anti-inflammatory responses. However, the role of $Fc{\gamma}Rs$ in the development of HP has not been investigated yet. Methods: To explore the functional roles of $Fc{\gamma}Rs$ in HP, $Fc{\gamma}R^{-/-}$ and B6 mice were challenged with Saccharopolyspora rectivirgula (SR) antigen intranasally, and compared these mice in terms of the histological change, infiltrated immune cells in BALF and in vitro immune responses. Results: $Fc{\gamma}R^{-/-}$ mice exhibited attenuation of HP in terms of histological alterations, and reduced numbers of neutrophils and macrophages in and the increased CD4 : CD8 ratio of bronchoalveolar lavage fluid. The lungs of $Fc{\gamma}R^{-/-}$ mice showed high production of Th2 cytokine such as IL-4 and slightly low production of Th1 cytokine, INF-${\gamma}$ compared to those of B6 mice. However, SR-specific adaptive immune responses of $Fc{\gamma}R^{-/-}$ mice were similar to those of B6 mice. Conclusion: These results demonstrate that activating $Fc{\gamma}$ receptors play an important role in activating neutrophils and macrophages in pulmonary inflammation and inducing Th1 differentiation by regulating cytokine expression in SR-induced HP.

The Humidifier Disinfectant Disaster and the Culture of Bureaucratic Organizations (가습기살균제 참사와 관료적 조직 문화)

  • Hong, Sungook
    • Journal of Science and Technology Studies
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    • v.18 no.1
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    • pp.63-127
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    • 2018
  • This paper discuses how toxic humidifier disinfectants were produced and distributed by bypassing tightly regulated laws from 1994 when the first humidifier disinfectant was made until 2011 when it was found to be the cause of the untreated interstitial lung disease. Rather than presupposing immoral entrepreneurs or incompetent civil servants as the cause of this disaster, this paper focuses on the bureaucratic character of the corporate organization that sold the humidifier disinfectant and the government that approved it, and shows that communication in these bureaucratic organizations was hampered and thus defective. It emphasizes the fact that the bureaucracy and secrecy of these organizations are the major cause of the humidifier disinfectant disaster. An analysis of the bureaucratic characteristic of the organization can reveal what improvements should be made in the corporation and in the government in order not to recur this disaster.

A Case of Bronchial Papilloma (기관지 유두종 1예)

  • Kim, Heung-Jong;Park, Moo-Suk;Chung, Jae-Ho;Lee, Tae-Hee;Jeong, Jae-Hee;Kim, Young-Sam;Chang, Joon;Cho, Sang-Ho;Kwak, Seung-Min;Kim, Se-Kyu
    • Tuberculosis and Respiratory Diseases
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    • v.53 no.2
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    • pp.227-233
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    • 2002
  • Bronchial papilloma is a rare disease which most commonly manifests as an epithelial tumor consisting of polypoid interstitial tissues and epithelioid cells. This benign tumor comprises 2-5% of primary lung tumors and papilloma derived from the bronchial epithelium, and is a rare benign tumor in adults. Bronchial papilloma has a poor prognosis with a high risk of developing a malignancy. We report a case of a bronchial papilloma in a 62-year-old female patient, presenting with hemoptysis and an endobronchial lesion with a brief review of the relevant literature.

Overlap syndrome of systemic sclerosis with antineutrophil cytoplasmic antibody-associated vasculitis according to 2022 ACR/EULAR criteria

  • Jang Woo Ha;Jung Yoon Pyo;Sung Soo Ahn;Jason Jungsik Song;Yong-Beom Park;Sang-Won Lee
    • The Korean journal of internal medicine
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    • v.39 no.3
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    • pp.524-536
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    • 2024
  • Background/Aims: This study applied the 2022 American College of Rheumatology (ACR)/European Alliance of Associations for Rheumatology (EULAR) criteria for antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) to patients with systemic sclerosis (SSc) and investigated the frequency of overlap syndrome of SSc and AAV (SSc-AAV-OS). Methods: Among the 232 patients diagnosed with SSc, 105 with signs suggestive of small- or medium-vessel vasculitis, which were defined as the present of interstitial lung disease (ILD), peripheral neuropathy, or suspected renal vasculitis, were included in this study and analyzed. Results: Among the 105 SSc patients, the detection rate of ANCA was 19.0%. When the 2022 ACR/EULAR criteria were applied, the frequency of SSc-AAV-OS was 20.0%, which was much higher than 1.7% reported with previous criteria for AAV. ANCA positivity contributed to the reclassification of SSc-AAV-OS more than ANCA negativity in SSc patients with signs suggestive of small- or medium-vessel vasculitis. Conclusions: The frequency of SSc-AAV-OS in SSc patients with signs suggestive of small- or medium-vessel vasculitis at diagnosis was 20.0%. Therefore, we suggest that physicians should perform ANCA tests in SSc patients exhibiting signs suggestive of small- or medium-vessel vasculitis and apply the new criteria for AAV.

Difference in F-18 FDG Uptake According to the Patterns of CT-Based Diagnosed Pulmonary Lymphangitic Carcinomatosis in Patients with Lung Cancer (폐암환자에 있어 CT상으로 진단된 폐림프관성암종증의 형태에 따른 F-18 FDG 섭취의 차이)

  • Jun, Sung-Min;Kim, Yong-Ki;Kim, In-Ju;Kim, Seong-Jang;Nam, Hyun-Yeol;Kim, Bum-Soo
    • Nuclear Medicine and Molecular Imaging
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    • v.42 no.4
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    • pp.292-300
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    • 2008
  • Purpose: Our purpose was to evaluate F-18 FDG uptake in pulmonary lymphangitic carcinomatosis (PLC) according to CT findings and histology of lung cancer. Materials and Methods: Thirty-three lung cancer patients with PLC were enrolled in this retrospective study. All the patients had a CT-based diagnosis of PLC. Chest CT findings of PLC were classified on the basis of involvement of axial interstitium. We categorized the involvement of axial interstitium as group 1, and the involvement of peripheral interstitium only as group 2. Visual and semiquantitative analyses by F-18 FDG PET/CT were performed in the PLC lesions. At first, we analyzed the F-18 FDG uptake in the PLC by visual assessment. If abnormal uptake was seen in the PLC, we drew regions of interest in the PLC lesions to obtain the maximum SUVs (maxSUVs). Results: Of the 33 patients, 22 had abnormal F-18 FDG uptake in the visual assessment. There was no significant difference in the frequency of abnormal F-18 FDG uptake between group 1 and group 2 (p=0.17), although the frequency of group 1 tended to be higher than group 2 (15/19 (78.9%) in group 1, 7/14 (50.0%) in group 2). However, group 1 had a higher maxSUV than group 2 (p<0.01, group 1: $2.9{\pm}1.4$, group 2: $1.5{\pm}0.6$). There was no significant difference in the frequency of abnormal F-18 FDG uptake and maxSUV among the histology of the lung cancers. Conclusion: The involvement of axial interstitium in the PLC by lung cancer has a higher maxSUV than the involvement of only peripheral interstitium.