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Haldule S, Chatterjee M, Goswami RP, Vadsaria I, Gaur P, Kavadichanda C, Misra DP, Chinoy H, Agarwal V, Aggarwal R, Gupta L. A systematic review and meta-analysis of mycobacterial infections in patients with idiopathic inflammatory myopathies. Rheumatology (Oxford) 2022; 61:3521-3533. [PMID: 35104319 DOI: 10.1093/rheumatology/keac041] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 01/04/2022] [Accepted: 01/12/2022] [Indexed: 09/13/2023] Open
Abstract
OBJECTIVES Infections including tuberculosis (TB) are a leading cause of morbidity and mortality in idiopathic inflammatory myopathies (IIM). We systematically reviewed the prevalence of mycobacterial infections in patients with IIM. METHODS We screened PUBMED, EMBASE and SCOPUS databases and conference abstracts (2015-20) for original articles using Covidence. Pooled estimates of prevalence were calculated. RESULTS Of 83 studies (28 cohort studies, two case control and 53 case reports), 19 were analysed. Of 14 043 IIM patients, DM (54.41%) was the most common subset among TB. Most studies were from Asia with high prevalence (5.86%, 2.33%-10.60%). Pooled prevalence of mycobacterial infections among IIM was 3.58% (95% CI: 2.17%, 5.85%, P < 0.01). Disseminated and extrapulmonary forms (46.58%; 95% CI: 39.02%, 54.31%, P = 1.00) were as common as pulmonary TB (49.07%; 95% CI: 41.43%, 56.75%, P =0.99) both for I2=0. Muscle involvement, an otherwise rare site, was frequently seen in case reports (24.14%). M. tuberculosis (28.84%) was the most common pathogen followed by Mycobacterium avium complex (3.25%). Non-tuberculous mycobacteria were less common overall (6.25; 95% CI: 3.49%, 10.93%) I2=0, P =0.94. Subgroup analysis and meta-regression based on high vs low TB regions found prevalence 6.61% (2.96%, 11.33%) in high TB regions vs 2.05% (0.90%, 3.56%) in low TB regions. While death due to TB was occasionally reported (P =0.82), successful anti-tubercular treatment was common (13.95%). CONCLUSION TB is common in IIM, particularly in endemic regions though current data is largely heterogeneous. Extra-pulmonary forms and atypical sites including the muscle are frequent. Limited data suggests fair outcomes, although larger prospective studies may offer better understanding.
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Affiliation(s)
- Saloni Haldule
- Byramjee Jeejeebhoy Medical College and Sassoon General Hospitals, Pune
| | | | | | - Innara Vadsaria
- Byramjee Jeejeebhoy Medical College and Sassoon General Hospitals, Pune
| | - Prithvi Gaur
- Smt. Kashibai Navale Medical College and General Hospital, Pune
| | - Chengappa Kavadichanda
- Department of Clinical Immunology, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry
| | - Durga Prasanna Misra
- Department of Clinical Immunology and Rheumatology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
| | - Hector Chinoy
- National Institute for Health Research Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, The University of Manchester, Manchester
- Department of Rheumatology, Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, Salford
- Centre for Musculoskeletal Research, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - Vikas Agarwal
- Department of Clinical Immunology and Rheumatology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
| | - Rohit Aggarwal
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Latika Gupta
- Department of Clinical Immunology and Rheumatology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
- Department of Rheumatology, Royal Wolverhampton Hospitals NHS trust, Wolverhampton
- Division of Musculoskeletal Sciences, University of Manchester, Manchester, UK
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Olivo Pallo PA, Hoff LS, Borges IBP, Torres-Ruiz J, Cassiano-Quezada F, Granel A, Gomez G, Pisoni C, Gomez R, Shinjo SK. Characterization of Patients With Dermatomyositis According to Anti-Melanoma Differentiation-Associated Gene-5 Autoantibodies in Centers from 3 Latin American Countries: A Cohort Study. J Clin Rheumatol 2022; 28:e444-e448. [PMID: 34262005 DOI: 10.1097/rhu.0000000000001756] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND/OBJECTIVE The anti-melanoma differentiation-associated protein 5 (MDA5) autoantibodies have been associated with a high frequency of interstitial lung disease (ILD) and rapidly progressive ILD (RP-ILD) in dermatomyositis (DM) patients, mainly in Asian subjects. However, there is scarce information about these parameters in Latin American patients. METHOD This was a medical records review cohort study that included classic DM (CDM) and clinically amyopathic DM (CADM) patients from 3 Latin American countries (Argentina, Brazil, and Mexico). RESULTS A total of 270 DM patients were evaluated: 25.9% with CADM and 74.1% with CDM. The overall prevalence of ILD and RP-ILD, respectively, was 70 (25.9%) and 4 (1.5%) of the 270 patients, and the distributions were comparable between patients with CDM and CADM. The anti-MDA5 was present in 31 (25.4%) of 122 CDM patients and in 17 (48.6%) of 35 CADM patients; it was not associated with presence of ILD and RP-ILD. However, anti-MDA5-positive CDM patients had significantly high frequency of "mechanic's hands," arthralgia, arthritis, and lower serum levels of creatine phosphokinase, whereas anti-MDA5-positive CADM patients had significantly high frequency of arthritis. Pulmonary infection and ILD are main causes of death in DM patients. CONCLUSIONS In the present study, the prevalence of ILD in DM patients is comparable to that described in the literature, in contrast to the very low frequency of RP-ILD. In addition, the anti-MDA5 is not associated with ILD and RP-ILD, but anti-MDA5-positive DM patients present conditions that mimic antisynthetase syndrome. Pulmonary infection and ILD were the main causes of death in our sample.
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Affiliation(s)
- Pablo Arturo Olivo Pallo
- From the Division of Rheumatology, Faculdade de Medicina FMUSP, Universidade de São Paulo, Brazil
| | - Leonardo Santos Hoff
- Immunology and Rheumatology Department, Salvador Zubirán National Institute of Health Sciences and Nutrition, Mexico City, Mexico
| | | | - Jiram Torres-Ruiz
- Immunology and Rheumatology Department, Salvador Zubirán National Institute of Health Sciences and Nutrition, Mexico City, Mexico
| | - Fabiola Cassiano-Quezada
- Immunology and Rheumatology Department, Salvador Zubirán National Institute of Health Sciences and Nutrition, Mexico City, Mexico
| | - Amelia Granel
- Division of Rheumatology, San Roque de Gonnet Hospital, La Plata, Argentina
| | | | - Cecilia Pisoni
- Immunology and Rheumatology Department, CEMIC University Institute
| | - Ramiro Gomez
- Division of Rheumatology, National Hospital Dr. Alejandro Posadas, Buenos Aires, Argentina
| | - Samuel Katsuyuki Shinjo
- From the Division of Rheumatology, Faculdade de Medicina FMUSP, Universidade de São Paulo, Brazil
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Ouahbi H, Benhami M, Nouikh L, Acharfi N, Kelati A, Oualla K, Benbrahim Z, Elmrabet FZ, Arifi S, Mernissi F, Mellas N. [Dermatomyositis and rectal cancer: case study and literature review]. Pan Afr Med J 2019; 33:122. [PMID: 31558922 PMCID: PMC6754859 DOI: 10.11604/pamj.2019.33.122.14509] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 01/28/2019] [Indexed: 11/11/2022] Open
Abstract
Dermatomyositis is a systemic idiopathic disease characterized by a combination of both muscle and skin symptoms. It is a paraneoplastic dermatosis. Its association with rectal cancer has been rarely described in the literature. We here report the case of a female patient with paraneoplastic dermatomyositis associated with metastatic rectal adenocarcinoma presenting with clinical symptoms commonly found in subjects with paraneoplastic dermatomyositis. Other complementary examinations (CPK test + EMG + skin biopsy) were performed which confirmed this diagnosis. The patient underwent chemotherapy, but after the second cycle, she experienced a rapid worsening of her general condition and died after some days in a state of multisystem organ failure. This study aims to highlight paraneoplastic dermatomyositis' aggressive nature and to update current knowledge on the importance of chemotherapy in the management of neoplastic dermatomyositis.
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Affiliation(s)
- Hajar Ouahbi
- Service d'Oncologie Médicale, CHU Hassan II, Fès, Maroc
| | | | - Lamiae Nouikh
- Service d'Oncologie Médicale, CHU Hassan II, Fès, Maroc
| | | | | | - Karima Oualla
- Service d'Oncologie Médicale, CHU Hassan II, Fès, Maroc
| | | | | | - Samia Arifi
- Service d'Oncologie Médicale, CHU Hassan II, Fès, Maroc
| | | | - Nawfel Mellas
- Service d'Oncologie Médicale, CHU Hassan II, Fès, Maroc
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4
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Tseng CC, Chang SJ, Tsai WC, Ou TT, Wu CC, Sung WY, Hsieh MC, Yen JH. Sex differential association of dermatomyositis with Sjögren syndrome. CMAJ 2017; 189:E187-E193. [PMID: 28246264 DOI: 10.1503/cmaj.160783] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/29/2016] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Although dermatomyositis and Sjögren syndrome share serologic autoantibodies and genetic polymorphisms, population data about the incidence of Sjögren syndrome in patients with dermatomyositis is unavailable. We performed a nationwide cohort study to explore the potential relation between dermatomyositis and Sjögren syndrome and, if an association exists, to elucidate whether it varies by sex. METHODS We identified all patients with newly diagnosed dermatomyositis from the Registry of Catastrophic Illness Database in Taiwan between Jan. 1, 1998, and Dec. 31, 2011. Each patient was matched to, at most, 5 control patients from the National Health Insurance Research Database by age, sex and entry date. Cox regression was used to calculate the hazard ratio (HR) and 95% confidence interval (CI) of Sjögren syndrome after adjusting for age, sex, rheumatoid arthritis, systemic lupus erythematosus and systemic sclerosis. RESULTS A total of 1602 patients with dermatomyositis and 7981 control patients were enrolled in the study. There was a positive association of having Sjögren syndrome among patients with dermatomyositis after adjusting for age, sex, rheumatoid arthritis, systemic lupus erythematosus and systemic sclerosis (HR 2.67, 95% CI 2.01-3.54). The association was more pronounced in the male cohort (HR 2.69, 95% CI 1.19-6.09). INTERPRETATION We found a sex differential association of Sjögren syndrome among patients with dermatomyositis independent of age and concomitant autoimmune disease. Further studies are required to determine the clinical importance of this association for both outcomes and therapeutic options.
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Affiliation(s)
- Chia-Chun Tseng
- Department of Internal Medicine (Tseng), Kaohsiung Municipal Ta-Tung Hospital; Department of Kinesiology (Chang), Health and Leisure Studies, National University of Kaohsiung; Division of Rheumatology (Tsai, Ou, Wu, Sung, Yen), Department of Internal Medicine, Kaohsiung Medical University Hospital; Graduate Institute of Medicine (Sung, Yen), College of Medicine, Kaohsiung Medical University; Division of Endocrinology and Metabolism, Department of Internal Medicine (Hsieh), Changhua Christian Hospital, Changhua, Taiwan; Graduate Institute of Integrated Medicine (Hsieh), China Medical University, Taichung, Taiwan
| | - Shun-Jen Chang
- Department of Internal Medicine (Tseng), Kaohsiung Municipal Ta-Tung Hospital; Department of Kinesiology (Chang), Health and Leisure Studies, National University of Kaohsiung; Division of Rheumatology (Tsai, Ou, Wu, Sung, Yen), Department of Internal Medicine, Kaohsiung Medical University Hospital; Graduate Institute of Medicine (Sung, Yen), College of Medicine, Kaohsiung Medical University; Division of Endocrinology and Metabolism, Department of Internal Medicine (Hsieh), Changhua Christian Hospital, Changhua, Taiwan; Graduate Institute of Integrated Medicine (Hsieh), China Medical University, Taichung, Taiwan
| | - Wen-Chan Tsai
- Department of Internal Medicine (Tseng), Kaohsiung Municipal Ta-Tung Hospital; Department of Kinesiology (Chang), Health and Leisure Studies, National University of Kaohsiung; Division of Rheumatology (Tsai, Ou, Wu, Sung, Yen), Department of Internal Medicine, Kaohsiung Medical University Hospital; Graduate Institute of Medicine (Sung, Yen), College of Medicine, Kaohsiung Medical University; Division of Endocrinology and Metabolism, Department of Internal Medicine (Hsieh), Changhua Christian Hospital, Changhua, Taiwan; Graduate Institute of Integrated Medicine (Hsieh), China Medical University, Taichung, Taiwan
| | - Tsan-Teng Ou
- Department of Internal Medicine (Tseng), Kaohsiung Municipal Ta-Tung Hospital; Department of Kinesiology (Chang), Health and Leisure Studies, National University of Kaohsiung; Division of Rheumatology (Tsai, Ou, Wu, Sung, Yen), Department of Internal Medicine, Kaohsiung Medical University Hospital; Graduate Institute of Medicine (Sung, Yen), College of Medicine, Kaohsiung Medical University; Division of Endocrinology and Metabolism, Department of Internal Medicine (Hsieh), Changhua Christian Hospital, Changhua, Taiwan; Graduate Institute of Integrated Medicine (Hsieh), China Medical University, Taichung, Taiwan
| | - Cheng-Chin Wu
- Department of Internal Medicine (Tseng), Kaohsiung Municipal Ta-Tung Hospital; Department of Kinesiology (Chang), Health and Leisure Studies, National University of Kaohsiung; Division of Rheumatology (Tsai, Ou, Wu, Sung, Yen), Department of Internal Medicine, Kaohsiung Medical University Hospital; Graduate Institute of Medicine (Sung, Yen), College of Medicine, Kaohsiung Medical University; Division of Endocrinology and Metabolism, Department of Internal Medicine (Hsieh), Changhua Christian Hospital, Changhua, Taiwan; Graduate Institute of Integrated Medicine (Hsieh), China Medical University, Taichung, Taiwan
| | - Wan-Yu Sung
- Department of Internal Medicine (Tseng), Kaohsiung Municipal Ta-Tung Hospital; Department of Kinesiology (Chang), Health and Leisure Studies, National University of Kaohsiung; Division of Rheumatology (Tsai, Ou, Wu, Sung, Yen), Department of Internal Medicine, Kaohsiung Medical University Hospital; Graduate Institute of Medicine (Sung, Yen), College of Medicine, Kaohsiung Medical University; Division of Endocrinology and Metabolism, Department of Internal Medicine (Hsieh), Changhua Christian Hospital, Changhua, Taiwan; Graduate Institute of Integrated Medicine (Hsieh), China Medical University, Taichung, Taiwan
| | - Ming-Chia Hsieh
- Department of Internal Medicine (Tseng), Kaohsiung Municipal Ta-Tung Hospital; Department of Kinesiology (Chang), Health and Leisure Studies, National University of Kaohsiung; Division of Rheumatology (Tsai, Ou, Wu, Sung, Yen), Department of Internal Medicine, Kaohsiung Medical University Hospital; Graduate Institute of Medicine (Sung, Yen), College of Medicine, Kaohsiung Medical University; Division of Endocrinology and Metabolism, Department of Internal Medicine (Hsieh), Changhua Christian Hospital, Changhua, Taiwan; Graduate Institute of Integrated Medicine (Hsieh), China Medical University, Taichung, Taiwan
| | - Jeng-Hsien Yen
- Department of Internal Medicine (Tseng), Kaohsiung Municipal Ta-Tung Hospital; Department of Kinesiology (Chang), Health and Leisure Studies, National University of Kaohsiung; Division of Rheumatology (Tsai, Ou, Wu, Sung, Yen), Department of Internal Medicine, Kaohsiung Medical University Hospital; Graduate Institute of Medicine (Sung, Yen), College of Medicine, Kaohsiung Medical University; Division of Endocrinology and Metabolism, Department of Internal Medicine (Hsieh), Changhua Christian Hospital, Changhua, Taiwan; Graduate Institute of Integrated Medicine (Hsieh), China Medical University, Taichung, Taiwan
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Tiniakou E, Mammen AL. Idiopathic Inflammatory Myopathies and Malignancy: a Comprehensive Review. Clin Rev Allergy Immunol 2017; 52:20-33. [PMID: 26429706 DOI: 10.1007/s12016-015-8511-x] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The idiopathic inflammatory myopathies (IIMs) are a heterogeneous group of autoimmune diseases (collectively known as myositis) affecting the skeletal muscles as well as other organ systems such as skin, lungs, and joints. The primary forms of myositis include polymyositis (PM), dermatomyositis (PM), and immune-mediated necrotizing myopathy (IMNM). Patients with these diseases experience progressive proximal muscle weakness, have characteristic muscle biopsy findings, and produce autoantibodies that are associated with unique clinical features. One distinguishing feature of these patients is that they are also known to have an increased risk of cancer. Since the first description of the association in 1916, it has been extensively reported in the medical literature. However, there have been significant variations between the different studies with regard to the degree of cancer risk in patients with IIM. These discrepancies can, in part, be attributed to differences in the definition of malignancy-associated myositis used in different studies. In recent years, significant advances have been made in defining specific features of IIM that are associated with the development of malignancy. One of these has been myositis-specific antibodies (MSAs), which are linked to distinct clinical phenotypes and categorize patients into groups with more homogeneous features. Indeed, patients with certain MSAs seem to be at particularly increased risk of malignancy. This review attempts a systematic evaluation of research regarding the association between malignancy and myositis.
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Affiliation(s)
- Eleni Tiniakou
- Division of Rheumatology, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Andrew L Mammen
- Division of Rheumatology, School of Medicine, Johns Hopkins University, Baltimore, MD, USA. .,Muscle Disease Unit, Laboratory of Muscle Stem Cells and Gene Expression, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, 50 South Drive, Room 1146, Building 50, MSC 8024, Bethesda, MD, 20892, USA.
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6
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Udkoff J, Cohen PR. Amyopathic Dermatomyositis: A Concise Review of Clinical Manifestations and Associated Malignancies. Am J Clin Dermatol 2016; 17:509-518. [PMID: 27256496 DOI: 10.1007/s40257-016-0199-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Amyopathic dermatomyositis is a rare, idiopathic, connective tissue disease that presents with dermatologic lesions of classic dermatomyositis but lacks the myopathy of this disease. Cutaneous manifestations may include Gottron's sign, heliotrope rash, and characteristic patterns of poikiloderma. There is a substantial risk for developing interstitial lung disease or malignancy in patients with amyopathic dermatomyositis. A literature review of amyopathic dermatomyositis was performed using the PubMed medical database. The key features of amyopathic dermatomyositis, including autoantibodies, clinical presentation and dermatologic manifestations, epidemiology, history, associated malignancies, management, and pathogenesis, are summarized in this review. Cancer (solid tumor) (73/79, 89 %) and hematologic malignancies (9/79, 11 %) were reported in 79 patients, with three patients having more than one malignancy. In addition, there were six patients with amyopathic dermatomyositis who had tumor of unknown primary, and eight patients with cancer-associated amyopathic dermatomyositis for whom no additional details were provided. From the group of 73 tumors for whom primary origin and sex were available, malignancy of the genitourinary organs (24/73, 33 %), aerorespiratory organs (15/73, 21 %), and breast (14/73, 19 %) were the most commonly observed solid organ tumors. Tumors of the genitourinary organs (15/48, 31 %) and breast (14/48, 29 %) were the most frequent neoplasms in women, accounting for 29 of 48 (60 %) cancers, with the most common sites being breast (14/48, 29 %), ovary (8/48, 17 %), and cervix or uterus (5/48, 10 %). In men, tumors of the aerorespiratory (9/25, 36 %) and genitourinary (9/25, 36 %) tracts were the most common neoplasms, accounting for 72 % (18/25) of cancers; the most common sites of primary malignancy were nasopharyngeal (6/25, 24 %), bladder (4/25, 16 %), and either colorectal, lung or prostate cancer (three cancers each, 12 %). In summary, the search for an undiagnosed associated malignancy in patients with amyopathic dermatomyositis should focus towards the organs most frequently affected. Similar to classic dermatomyositis, ovarian and nasopharyngeal cancers are also common in amyopathic dermatomyositis. However, in contrast to lung cancer, which is the most frequent malignancy associated with classic dermatomyositis, breast cancer was the most common type of malignancy reported in patients with amyopathic dermatomyosotis.
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Affiliation(s)
- Jeremy Udkoff
- Medical School, University of California San Diego, San Diego, CA, 92093, USA
| | - Philip R Cohen
- Department of Dermatology, University of California San Diego, 10991 Twinleaf Court, San Diego, CA, 92131, USA.
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7
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Esposito ACC, Munhoz T, Ocanha JP, Miot HA. Syndrome in question. An Bras Dermatol 2016; 91:387-9. [PMID: 27438215 PMCID: PMC4938292 DOI: 10.1590/abd1806-4841.20164298] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Accepted: 03/11/2015] [Indexed: 11/21/2022] Open
Abstract
Dermatomyositis is a rare inflammatory disease, autoimmune, with proximal
myopathy associated with characteristic dermatological manifestations. In
adults, 20-50% of the cases are paraneoplastic manifestation, being mandatory
the workup for malignancy Herein we report a case of a woman with classic
dermatological presentation of dermatomyositis and newly diagnosed breast
cancer. In general, the clinical presentation of paraneoplastic dermatomyositis
is more exuberant and manifestations may precede, concur or succeed the
diagnosis of neoplasia. The prognosis of cases associated with breast cancer is
worse than the idiopathic form. Treatment is based mainly on the resolution of
the underlying disease, beyond immunosuppressants.
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Affiliation(s)
| | - Tânia Munhoz
- Universidade Estadual Paulista "Júlio de Mesquita Filho", Brazil
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Galimberti F, Li Y, Fernandez AP. Clinically amyopathic dermatomyositis: clinical features, response to medications and malignancy-associated risk factors in a specific tertiary-care-centre cohort. Br J Dermatol 2015; 174:158-64. [PMID: 26490490 DOI: 10.1111/bjd.14227] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/28/2015] [Indexed: 01/05/2023]
Abstract
BACKGROUND Clinically amyopathic dermatomyositis (CADM) is a subset of dermatomyositis (DM) characterized by the typical DM cutaneous manifestations but without myositis. There is a relative paucity of characterized cases of CADM in the peer-reviewed medical literature. OBJECTIVES To characterize the clinical features, response to medications and malignancy-associated risk factors of patients with CADM with available baseline data seen at a single tertiary-care centre. METHODS A retrospective review was undertaken of 44 patients with CADM with available clinical and serological data prior to onset of treatment. RESULTS Patients with CADM comprised 18% of all patients with DM with baseline data available at our institution. Although the majority of patients showed improvement with the first prescribed treatment, most required additional medications to control their CADM. Six of 44 patients had an associated malignancy. Photosensitivity and periungual erythema were found to be associated with absence of malignancy (P = 0·03 and P = 0·02, respectively). Patients with malignancy-associated CADM were found to be more likely to have a cutaneous response with the first prescribed treatment than patients without malignancy (P = 0·04). CONCLUSIONS CADM represents a significant subset of the DM population. As with classic DM, the cutaneous manifestations of CADM often represent a therapeutic challenge. A subset of patients with CADM has underlying malignancies, and these may differ from those typically associated with classic DM. Differences in serological abnormalities, cutaneous manifestations and response to first treatment among patients with CADM with and without malignancy were found, and suggest distinct pathophysiologies among CADM subsets. Characterization of this cohort expands the knowledge about this unique DM subset.
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Affiliation(s)
- F Galimberti
- Cleveland Clinic Lerner College of Medicine, Cleveland, OH, U.S.A
| | - Y Li
- Cleveland Clinic Lerner College of Medicine, Cleveland, OH, U.S.A
| | - A P Fernandez
- Departments of Dermatology and Pathology, Cleveland Clinic, 9500 Euclid Avenue, A61, Cleveland, OH, U.S.A
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