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Vol. 12. Issue 6.
Pages 360-362 (November - December 2016)
Vol. 12. Issue 6.
Pages 360-362 (November - December 2016)
Letter to the Editor
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Polymyositis in a Patient With Ulcerative Colitis
Polimiositis en un paciente con colitis ulcerosa
Andrés González Garcíaa,
Corresponding author
, Walter Alberto Sifuentes-Giraldob, Sergio Diz Fariñaa, Héctor Pianc
a Servicio de Medicina Interna, Hospital Universitario Ramón y Cajal, Madrid, Spain
b Servicio de Reumatología, Hospital Universitario Ramón y Cajal, Madrid, Spain
c Servicio de Anatomía Patológica, Hospital Universitario Ramón y Cajal, Madrid, Spain
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Tables (1)
Table 1. Characteristics of the Patients With Polymyositis Associated With Ulcerous Colitis.
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Dear Editor,

Ulcerative colitis (UC) is an inflammatory disease that affects the colorectal mucosa in a diffuse form, continuously and superficially.1 Polymyositis (PM) belongs to the spectrum of idiopathic inflammatory myopathies, and is differentiated from dermatomyositis (DM) because of the absence of the characteristic skin rash.2 Muscle involvement in the form of PM has rarely been described in UC. We report the case of a patient who was initially diagnosed as having UC, and developed PM over the course of his disease. We also review cases published to date. Our patient was a 46-year-old man, an ex-smoker, who presented with persistent bloody diarrhea with no other associated symptoms, and was diagnosed with UC. At the age of 58 years, he presented with an episode of pain and swollen hands, and was too weak to climb stairs. Laboratory tests detected increases in creatine kinase (CK) (1578U/L) and lactate dehydrogenase (LDH) (506U/L), although all other inflammatory parameters were normal. The rest of the biochemical study, including complete blood count, showed normal values. The immunological study demonstrated the presence of antinuclear antibodies, at a titer of 1/160, and negative tests for anti-extractable nuclear antigens (ENA), anti-DNA antibodies, antineutrophil cytoplasmic antibodies (ANCA), anti-centromere antibodies, anti-Scl-70 and antibodies specific for myositis (Jo-1, PL7, PL12, OJ, EJ, SRP, Pm-Scl, Mi2 and Ku). A muscle biopsy of quadriceps was performed (Fig. 1), and evidenced variability in the size of the muscle fibers, with some necrotic fibers, regenerative basophilic fibers and frequent mononuclear inflammatory cell infiltrates, mostly lymphocytic and located in the endomysium. The expression of the major histocompatibility complex class I antigens was positive in the muscle fibers, all of which was compatible with the diagnosis of PM. Treatment was begun with a tapering dose of prednisone starting at 20mg/day, to be followed by methotrexate (maximum dose 25mg/week), and normalization of the CK and LDH levels was achieved after 16 months of treatment.

Fig. 1.

Image of the muscle biopsy: (A) There are muscle fibers with regenerative peripheral basophilic areas (hematoxylin–eosin stain ×63). (B) Muscle expression of the class I antigens of the human leukocyte antigen (HLA) system. (C) There is an endomysial lymphocyte cell infiltrate located in the (hematoxylin–eosin stain ×40). (D) Variability of the size of the muscle fibers and periendomysial (hematoxylin–eosin stain ×10).


Muscle involvement in inflammatory bowel disease is uncommon; in fact, only 7 cases associating PM and UC have been published to date3–9 (Table 1). Only in the patient we describe was the diagnosis reached because of the increase in muscle enzymes. The response to glucocorticoid treatment was so good, in general, except in an individual who was refractory to several immunosuppressive agents and whose disease entered remission with mycophenolate mofetil.9 It has been suggested that the basis for the development of PM in UC results from the common immune-mediated mechanism, in which bowel inflammation and the damage to the mucosa would lead to a release of antigens, stimulating the production of antibodies that would damage the muscle. In conclusion, the development of PM in UC should be taken into account, especially when these patients describe symptoms such as myalgia, muscle weakness or present an increase in muscle enzymes. Although there are few cases reported in the literature, it may be underdiagnosed given that the symptoms may be few and not very specific, and can be attributed to other causes.

Table 1.

Characteristics of the Patients With Polymyositis Associated With Ulcerous Colitis.

Authors [Ref]  Sex  Age (years)  Associated defects  AAB  Time between the diagnosis of UC and the development of PM  Muscle groups affected  Extramuscular manifestations  Treatment  Outcome 
Hernández et al.3  11  HLA-B27 (−) Sacroiliitis  No  Simultaneous  Regions proximal to extremities and neck flexors  No  Oral prednisone 1.5mg/kg/day  Improvement of muscle manifestations 
Evrard et al.4  33  Not associated chronic liver disease  No  4 years earlier  Lower extremities  Fever  Oral sulfasalazine 1.5g/day
Betamethasone enemas 
Improvement of bowel and muscle manifestations 
Kaneoka et al.5  57  Not associated liver cirrhosis  ANA 1/160
RF (+) 
11 years earlier  Torso and regions proximal to extremities and neck flexors  No  Oral prednisolone 40mg/day  UC quiescent, PM with moderate activity. Death due to liver failure 
Chugh et al.6  78  Esophagitis and erosive gastritis  No  15 years earlier  Torso and regions proximal to extremities and neck flexors  Polyarthralgia  Oral prednisolone 40mg/day
Oral 5-aminosalicylic acid 400mg/8h
Prednisolone enemas 
UC in remission, improvement of muscle manifestations 
Voigt et al.7  33  –  ANA 1:2.560
Anti-DNA (+) 
4 years earlier  Regions proximal to extremities  No  IV prednisolone 200mg/day for 7 days, followed by oral prednisone 60mg/day  UC quiescent, PM in remission 

AAB, autoantibodies; ANA, antinuclear antibodies; CK, creatine kinase; IV, intravascular; M, man; PM, polymyositis; Ref, reference; RF, rheumatoid factor; UC, ulcerative colitis; W, woman.

Conflict of Interest

The authors declare they have no conflict of interest directly or indirectly related to the contents of this manuscript.

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Please cite this article as: González García A, Sifuentes-Giraldo WA, Diz Fariña S, Pian H. Polimiositis en un paciente con colitis ulcerosa. Reumatol Clin. 2016;12:360–362.

Copyright © 2015. Elsevier España, S.L.U. and Sociedad Española de Reumatología y Colegio Mexicano de Reumatología
Reumatología Clínica (English Edition)

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