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Reviews

[English]
Current and emerging treatment strategies for Mycobacterium avium complex pulmonary disease: a narrative review
Chiwook Chung
Received February 23, 2025  Accepted March 14, 2025  Published online March 26, 2025  
DOI: https://doi.org/10.12771/emj.2025.00080    [Epub ahead of print]
The Mycobacterium avium complex (MAC), comprising M. avium and M. intracellulare, constitutes the predominant cause of nontuberculous mycobacterial pulmonary disease (NTM-PD) in Korea, followed by the M. abscessus complex. Its global prevalence is increasing, as shown by a marked rise in Korea from 11.4 to 56.7 per 100,000 individuals between 2010 and 2021, surpassing the incidence of tuberculosis. Among the older adult population (aged ≥65 years), the prevalence escalated from 41.9 to 163.1 per 100,000, accounting for 47.6% of cases by 2021. Treatment should be individualized based on prognostic indicators, including cavitary disease, low body mass index, and positive sputum smears for acid-fast bacilli. Current therapeutic guidelines recommend a 3-drug regimen—consisting of a macrolide, rifampin, and ethambutol—administered for a minimum of 12 months following culture conversion. Nevertheless, treatment success rates are only roughly 60%, and over 30% of patients experience recurrence. This is often attributable to reinfection rather than relapse. Antimicrobial susceptibility testing for clarithromycin and amikacin is essential, as resistance significantly worsens prognosis. Ethambutol plays a crucial role in preventing the development of macrolide resistance, whereas the inclusion of rifampin remains a subject of ongoing debate. Emerging therapeutic strategies suggest daily dosing for milder cases, increased azithromycin dosing, and the substitution of rifampin with clofazimine in severe presentations. Surgical resection achieves a notable sputum conversion rate of approximately 93% in eligible candidates. For refractory MAC-PD, adjunctive therapy with amikacin is advised, coupled with strategies to reduce environmental exposure. Despite advancements in therapeutic approaches, patient outcomes remain suboptimal, highlighting the urgent need for novel interventions.
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[English]
Impact of pulmonary tuberculosis on lung cancer screening: a narrative review
Jeong Uk Lim
Received February 16, 2025  Accepted March 17, 2025  Published online March 26, 2025  
DOI: https://doi.org/10.12771/emj.2025.00052    [Epub ahead of print]
Lung cancer remains a leading cause of cancer-related mortality worldwide. Low-dose computed tomography (LDCT) screening has demonstrated efficacy in reducing lung cancer mortality by enabling early detection. In several countries, including Korea, LDCT-based screening for high-risk populations has been incorporated into national healthcare policies. However, in regions with a high tuberculosis (TB) burden, the effectiveness of LDCT screening for lung cancer may be influenced by TB-related pulmonary changes. Studies indicate that the screen-positive rate in TB-endemic areas differs from that in low-TB prevalence regions. A critical challenge is the differentiation between lung cancer lesions and TB-related abnormalities, which can contribute to false-positive findings and increase the likelihood of unnecessary invasive procedures. Additionally, structural lung damage from prior TB infections can alter LDCT interpretation, potentially reducing diagnostic accuracy. Nontuberculous mycobacterial infections further complicate this issue, as their radiologic features frequently overlap with those of TB and lung cancer, necessitating additional microbiologic confirmation. Future research incorporating artificial intelligence and biomarkers may enhance diagnostic precision and facilitate a more personalized approach to lung cancer screening in TB-endemic settings.
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[English]
Pathophysiology, clinical manifestation, and treatment of tuberculosis-associated chronic obstructive pulmonary disease: a narrative review
Joon Young Choi
Received February 17, 2025  Accepted March 10, 2025  Published online March 19, 2025  
DOI: https://doi.org/10.12771/emj.2025.00059    [Epub ahead of print]
Chronic obstructive pulmonary disease (COPD) is a leading cause of respiratory morbidity and mortality, most often linked to smoking. However, growing evidence indicates that previous tuberculosis (TB) infection is also a critical risk factor for COPD. This review aimed at providing a comprehensive perspective on TB-COPD, covering its epidemiologic significance, pathogenesis, clinical characteristics, and current management approaches. Tuberculosis-associated chronic obstructive pulmonary disease (TB-COPD) is characterized by persistent inflammatory responses, altered immune pathways, and extensive structural lung damage—manifested as cavitation, fibrosis, and airway remodeling. Multiple epidemiologic studies have shown that individuals with a history of TB have a significantly higher likelihood of developing COPD and experiencing worse outcomes, such as increased breathlessness and frequent exacerbations. Key pathogenic mechanisms include elevated matrix metalloproteinase activity and excessive neutrophil-driven inflammation, which lead to alveolar destruction, fibrotic scarring, and the development of bronchiectasis. Treatment generally follows current COPD guidelines, advocating the use of long-acting bronchodilators and the selective application of inhaled corticosteroids. Studies have demonstrated that indacaterol significantly improves lung function and respiratory symptoms, while long-acting muscarinic antagonists have shown survival benefits.
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[English]
Epidemiology and management of infectious spondylitis in Korea: a narrative review
Kyung-Hwa Park
Ewha Med J 2024;47(3):e37.   Published online July 31, 2024
DOI: https://doi.org/10.12771/emj.2024.e37

Infectious spondylitis, an infection of the vertebral body, intervertebral disc, or paraspinal tissues, poses diagnostic and therapeutic challenges. This review examines the clinical approach and management of infectious spondylitis in Korea. The incidence of pyogenic spondylitis has increased, primarily due to the aging population, more frequent use of invasive procedures, and higher prevalence of immunocompromising conditions. Conversely, tuberculous spondylitis has declined, reflecting shifts in population demographics and medical practices. Staphylococcus aureus remains the predominant causative agent in pyogenic cases, while Mycobacterium tuberculosis is the primary pathogen in tuberculous spondylitis. The diagnosis is contingent upon clinical suspicion, inflammatory markers, imaging studies, and microbiological identification. MRI is the preferred imaging modality, offering high sensitivity and specificity. Blood cultures and tissue biopsy are instrumental in isolating the causative organism and determining its antibiotic susceptibility. Treatment involves antimicrobial therapy, spinal immobilization, and vigilant monitoring for complications. Surgical intervention may be necessary in cases involving neurological deficits, abscesses, or spinal instability. The prognosis for infectious spondylitis varies. Long-term complications, including chronic pain, neurological deficits, and spinal deformities, may arise and can meaningfully impact quality of life. Mortality is considerable and is influenced by comorbidities and disease severity. The risk of recurrence, particularly within the first year after treatment, is a concern. This review underscores the importance of ongoing research and education in refining diagnostic and treatment strategies for infectious spondylitis. As this condition becomes more common, these efforts offer hope for improving patient care and reducing the burden of this severe spinal infection.

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Case Reports

[English]
Differentiating between Intestinal Tuberculosis and Crohn’s Disease May Be Complicated by Multidrug-resistant Mycobacterium tuberculosis
Seung Wook Hong, Sang Hyoung Park, Byong Duk Ye, Suk-Kyun Yang
Ewha Med J 2021;44(3):93-96.   Published online July 31, 2021
DOI: https://doi.org/10.12771/emj.2021.44.3.93

Differentiating between intestinal tuberculosis (ITB) and Crohn’s disease (CD) remains a challenge for gastroenterologists. In Asia, where the prevalence of tuberculosis is relatively high and the incidence of CD is rapidly increasing, this issue is crucial. Here we report a case that was initially misdiagnosed as CD, subsequently showed no response to empirical first-line anti-tuberculosis medication, and was finally diagnosed with multidrug-resistant ITB. This case reminds physicians that multidrug-resistant ITB may complicate distinguishing between ITB and CD.

Citations

Citations to this article as recorded by  
  • Is Multidrug-resistant Extrapulmonary Tuberculosis Important? If So, What Is Our Strategy?
    Seong-Eun Kim
    The Ewha Medical Journal.2021; 44(4): 148.     CrossRef
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  • 1 Web of Science
  • 1 Crossref
[English]
Anti-tuberculosis Treatment-Induced Insulin Autoimmune Syndrome
Jung Suk Han, Han Ju Moon, Jin Seo Kim, Hong Il Kim, Cheol Hyeon Kim, Min Joo Kim
Ewha Med J 2016;39(4):122-124.   Published online October 27, 2016
DOI: https://doi.org/10.12771/emj.2016.39.4.122

Insulin autoimmune syndrome, a rare cause of endogenous hyperinsulinemic hypoglycemia, is characterized by insulin autoantibody, hyperinsulinemia and fasting hypoglycemia. It is well known that drugs containing a sulfhydryl group such as methimazole or α-mercaptopropionyl glycine can induce insulin autoimmune syndrome. However, insulin autoimmune syndrome caused by anti-tuberculosis treatment is very rare. We report a case of insulin autoimmune syndrome after anti-tuberculosis treatment with a review of the relevant literature.

Citations

Citations to this article as recorded by  
  • Insulin Autoimmune Syndrome: A Systematic Review
    MingXu Lin, YuHua Chen, Jie Ning, Tatsuya Kin
    International Journal of Endocrinology.2023; 2023: 1.     CrossRef
  • An Unusual Cause of Hypoglycemia: Insulin Autoimmune Syndrome
    Yasemin AYDOĞAN ÜNSAL, Özen ÖZ GÜL, Soner CANDER, Canan ERSOY, Oktay ÜNSAL, Ensar AYDEMİR, Erdinç ERTÜRK
    Turkish Journal of Internal Medicine.2021; 3(1): 30.     CrossRef
  • Effects of Co‐administration of Sulfonylureas and Antimicrobial Drugs on Hypoglycemia in Patients with Type 2 Diabetes Using a Case‐Crossover Design
    Sera Lee, Miyoung Ock, Hun‐Sung Kim, Hyunah Kim
    Pharmacotherapy: The Journal of Human Pharmacology and Drug Therapy.2020; 40(9): 902.     CrossRef
  • Insulin autoimmune syndrome: A rare cause of hypoglycemia
    TejasM Maheshwari, Anurag Sharma, BhagwaniBai Maheshwari
    Journal of Family Medicine and Primary Care.2020; 9(9): 5046.     CrossRef
  • Rare Cause of Recurrent Hypoglycemia: Insulin Autoimmune Syndrome
    Rungsima Tinmanee, Rungpailin Buranagan, Sirirat Ploybutr, Raweewan Lertwattanarak, Apiradee Sriwijitkamol
    Case Reports in Endocrinology.2017; 2017: 1.     CrossRef
  • Isoniazid

    Reactions Weekly.2017; 1634(1): 169.     CrossRef
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  • 6 Crossref
[English]
Acquired Immunodeficiency Syndrome Presenting with Abdominal Tuberculosis
Byung Sung Koh, Sang-Jung Kim, Kyoung Hwa Yoo, Kyung Han Lee, Gi Tark Noh, Won Seok Heo
Ewha Med J 2015;38(3):112-116.   Published online October 31, 2015
DOI: https://doi.org/10.12771/emj.2015.38.3.112

The incidence of tuberculosis (TB) had gradually been declining all over the world, but in recent years, TB has been increasing due to the spread of the human immunodeficiency virus (HIV). When immune-suppression status deteriorates further, extrapulmonary TB generally appears more often. Abdominal TB is one type of extra-pulmonary TB, which may involve the gastrointestinal tract, peritoneum, lymph nodes or solid viscera. We encountered a case who had initially been diagnosed as having abdominal TB, had progressed to acute respiratory distress syndrome and was eventually confirmed as having developed acquired immune deficiency syndrome. In cases of coinfection of TB and HIV, it is reported that immunological responses become poor and complications with higher morbidity frequently occur. Therefore, the Korean guidelines for TB should be revised to ensure whether HIV infection exists in TB patients.

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[English]
Rectus Abdominis Muscle Tuberculosis Involving Lung and Endometrium
Ji Yoon Kim, Eun Mi Chun, Jihyun Lee, Yookyung Kim, Sun Hee Sung, Yun Hwan Kim
Ewha Med J 2015;38(2):76-79.   Published online July 29, 2015
DOI: https://doi.org/10.12771/emj.2015.38.2.76

Extrapulmonary tuberculosis usually involves the pleura, central nervous system, lymphatic system, genitourinary system and bone with joint. There are few reports about pulmonary tuberculosis involving the endometrium and muscle. A 32-year-old woman who had intact immunity visited hospital due to menorrhagia, and was diagnosed with endometrial tuberculosis. The patient also had a painless abdominal mass about for 1 year before she came to the hospital. She was diagnosed with rectus abdominis muscle tuberculosis, endometrial tuberculosis, and pulmonary tuberculosis at the same time. We report a case of endometrial tuberculosis accompanied with rectus abdominis muscle and pulmonary tuberculosis in a non-immunosuppressed person.

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[English]
A Case of Pulmonary Tuberculosis Presenting as Diffuse Interstitial Lung Disease Associated with the Lymphadenopathy of Mediastinum and Abdomen
Eun Young Lee, Young Sun Hong, Seon Hee Cheon, Young Sik Park, Seung Yeon Baek, Woon Sup Han
Ihwa Ŭidae chi 1993;16(4):395-399.   Published online July 24, 2015
DOI: https://doi.org/10.12771/emj.1993.16.4.395

The diffuse interstitial lung diseases are a heterogeneous group of diffuse inflammatory disorders of the lower respiratory tract characterized by derangements of the alveolar walls and loss of functional alveolar capillary units. The most common causes of diffuse interstitial lung diseases are idiopathic pulmonary fibrosis, sarcoidosis, collagen vascular disorders, hypersensitivity pneumonitis and pneumoconiosis. Especially, the miliary tuberculosis is also leading cause in Korea, but pulmonary tuberculosis presenting as diffuse interstitial lung disease except miliary tubercuaosis is rare. We report a case of pulmonary tuberculosis presenting as diffuse interstitial lung disease associated with the tyrnphadenopathy of mediastinum and abdomen.

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[English]
Disseminated Tuberculosis in a Patient with Chronic Renal Failure
Ka-Young Jung, Sun Kyung Na, Hye-Won Yun, Ha Eng Song, Jung-Hwa Ryu, Dong-Ryeol Ryu
Ewha Med J 2013;36(1):67-71.   Published online March 25, 2013
DOI: https://doi.org/10.12771/emj.2013.36.1.67

Patients with chronic renal failure (CRF) are known to be more susceptible to tuberculosis infection due to impairment of the host defense mechanism. Although extrapulmonary tuberculosis is more prevalent in those subjects and it may induce dismal outcome, its diagnosis has been challenging since there is no specific symptoms of the disease and the clinical course is usually atypical. Herein, We report a case of disseminated tuberculosis diagnosed by ultrasound-guided liver biopsy in a 31-year-old CRF patient presenting sustained fever despite broad-spectrum antimicrobial therapy and progressive cholestatic jaundice.

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[English]
A Case of Dieulafoy's Disease of the Bronchus during Anti-Tuberculosis Therapy
In Je Kim, Hye Jung Chang, Ji Min Jung, Min Jung Kang, Ji Young Oh, Eun Hwa Choi, Moon Young Choi, Jin Wook Moon, Jung Hyun Chang, Jin Hwa Lee, Woon Sup Han
Ihwa Ŭidae chi 2006;29(2):123-126.   Published online September 30, 2006
DOI: https://doi.org/10.12771/emj.2006.29.2.123

Dieulafoy's disease is the vascular anomaly characterized by the presence of arteries of persistent large caliber in the submucosa, and in some instances, the mucosa, typically with a small, overlying mucosal defect. Only a few cases of this lesion occuring in the bronchial system have been reported to date. The etiology of Dieulafoy's disease is still unclear, but chronic bronchial injury and/or congenital vascular malformation have been postulated. We encountered a case of bronchial Dieulafoy's disease that developed in a 69-year-old woman who had been treated for pulmonary tuberculosis for 4 months. Her chief complaint was hemoptysis and the bronchoscopic finding showed an intrabronchial protruding lesion produced by the arteries beneath the bronchial mucosa of the anterior segment of right upper lobe. She has been well after the surgical resection of right upper lobe.

Citations

Citations to this article as recorded by  
  • Clinical characteristics and treatments for bronchial Dieulafoy's disease
    Wenfang Chen, Pingping Chen, Xiuyu Li, Xinglin Gao, Jing Li
    Respiratory Medicine Case Reports.2019; 26: 229.     CrossRef
  • 51 View
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  • 1 Crossref
Original Articles
[English]
Objectives

Subacute necrotizing lymphadenitis is a self-limiting disorder that typically affects cervical lymph nodes of young women. Although autoimmune reaction and a viral etiology have been suggested, the definite cause has been uncertain. We evaluated the association of M. tuberculosis and non-tuberculous mycobacterium with this disorder.

Materials and Methods

From 1994 to 2002, Clinicopathological findings of 38 cases were reviewed. Multiplex nested PCR was done using DNA extracted from paraffin-embedded tissue. Sequencing analysis was done to the cases showing positive band.

Results

3 cases among 38(7.89%) showed amplified non-tuberculous mycobacterium DNA. Two cases are M. gordonae and one is M. fortuitum by sequencing analysis. All cases revealed no positive band for M. tuberculosis. Negative control cases showed no bands for both mycobacteriums.

Conclusion

Although 7.89% of cases showed amplified non-tuberculous mycobacterium DNA, more study is needed to confirm the association of non-tuberculous mycobacterium with subacute necrotizing lymphadenitis.

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[English]
Computed Tomographic Differential Diagnosis of Cervical Lymphadenopathy: Tuberculous versus Metastatic
Eun A Kim, Soo Mee Lim, Chung Sik Rhee
Ihwa Ŭidae chi 2002;25(2):89-95.   Published online September 30, 2002
DOI: https://doi.org/10.12771/emj.2002.25.2.89
Purpose

To determine the computed tomographic findings of cervical lymphadenopathy which distinguish tuberculous lymphadenitis from metastatic lymphadenopathy.

Materials and Methods

We retrospectively analyzed the CT findings of 21 patients with tuberculous lymphadenitis and 19 with metastatic lymphadenopathy in terms of location, size, shape, presence and shape of necrosis, and presence of extranodal extension.

Results

The tuberculous lymphadenopathy was predominantly located in spinal accessory chain(level V)(42%), but metastatic lymphadinopathy was predominantly located in internal jugular chain(level II)(37%). Of the 21 patients with tuberculous lymphadenitis, the shape was conglomerated lesion with irregular margin in 13 cases. Of the 19 patients with metastatic lymphadenopathy, conglomerated lesion in 4 cases, which were statistically significant(p<0.05). The presence of central necrosis was more frequent in tuberculous lymphadenitis(n=20) than metastatic lymphadenopathy(n=11)(p<0.05). The presence of extranodal extension was significantly different between tuberculous(n=19) and metastatic lymphadenopathy(n=1)(p<0.05).

Conclusion

Cervical tuberculous lymphadenitis frequently involves the spinal accessory chain in young woman. The irregular conglomerated lesion with irregular central necrosis and extranodal extension on CT scan is suggestive of cervical tuberculous lymphadenitis, which is useful in differentiating from metastatic lymphadenopathy.

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[English]
CT Findings of Tuberculous Pneumonia in Diabetic Patients: Comparison with Tuberculosis in Nondiabetics
Yookyung Kim, Sung Won Park, Sang Min Lee, Kyung Soo Cho
Ihwa Ŭidae chi 2001;24(3):109-114.   Published online September 30, 2001
DOI: https://doi.org/10.12771/emj.2001.24.3.109
Objective

To evaluate the CT findings of pulmonary tuberculosis in diabetic patients compared with patients without underlying disease.

Methods

The chest CT scans of pulmonary tuberculosis in 23 diabetic patients(M : F=21 : 2 ; mean age, 59 yrs.) and in 24 nondiabetic patients(M : F=12 : 12 ; mean age, 48 yrs.) were retrospectively analyzed by two radiologists ; decisions were reached by consensus.

Results

The frequencies of consolidation(100%, 42%), inhomogeneity of consolidation(70%, 21%), multiple small low-density areas(52%, 13%), cavitation(70%, 25%), multiple small cavity(35%, 4%), bizarre-shaped cavity(22%, 0%), air-bronchogram(95%, 54%) were significantly more common in pulmonary tuberculosis in diabetic patients than in nondiabetic patients(p<.05). There was no significant difference in localization of pulmonary lesions between diabetic and nondiabetic patients.

Conclusion

Diabetic patients have a high prevalence of inhomogeneous consolidation containing multiple small low densities and multiple or bizarre-shaped cavities than do patients without diabetics.

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