Open Access Case Report

Coexistence of Crohn’s Disease and Systemic Lupus Erythematosus with Lupus Nephritis : About Two Cases

Mehdi Somaï1*, Fatma Daoud1, Imène Rachdi1, Hana Zoubeidi1, Besma Ben Dhaou1 and Fatma Boussema1

Internal medicine department, Habib Thameur Hospital, Tunis El Manar University, Tunisia

Corresponding Author

Received Date: August 05, 2019;  Published Date: August 09, 2019

Abstract

Introduction : The systemic lupus erythematosus (SLE) is usually associated with other autoimmune and dysimmune diseases. The coexistence of SLE and Crohn’s disease (CD), as an Inflammatory bowel disease, in the same patient is extremely rare. The presence of lupus nephritis during this association is even rarer.

Case Report : We report two observations, a 56-year-old woman and a 37-year-old man. The first was followed for a SLE and after 3 years she developed a CD. The second was followed for a CD and after 4 years he developed a SLE. Both patients presented the second disease at the time that the first was in remission. For both patients, the clinical manifestation of the CD was diarrhoea with ileocecal stenosis. Both patients presented with proliferative lupus nephritis. They had positive anti-DNA antibodies.

Conclusion : Admittedly, the association between the SLE and the CD is extremely rare, especially the presence of lupus nephritis, a screening of one of these diseases in presence of the other is thus justified in front of any several extraintestinal manifestation in CD and any gastrointestinal manifestation in a well-controlled SLE.

Keywords: Systemic lupus erythematosus; Crohn’s disease; Lupus nephritis

Abbreviations: CD: Crohn’s disease; IBD: Inflammatory bowel disease; LN: Lupus nephritis; SLE: Systemic lupus erythematosus

Introduction

Systemic lupus erythematosus (SLE) is a chronic multisystem inflammatory disease, known as a prototype for autoimmune disease [1,2]. It is usually associated with other autoimmune and dysimmune diseases. Inflammatory bowel disease (IBD) is one of the specific dysimmune diseases of the intestine with extraintestinal involvements and with environmental factors and genetic predisposition [3]. IBD is a chronic recurrent disease comprised of two major phenotypes, Crohn’s disease (CD) and ulcerative colitis [4]. The coexistence of SLE and CD in the same patient is extremely rare (<0.4%) [5]. Even rarer is the association between lupus nephritis (LN) and CD, with only two cases reported to date [6,7]. A review study corroborated that SLE was associated with comorbid CD (OR 2.23) [8]. We communicate herein two cases of patients, ones with SLE who was diagnosed CD colitis and the other with CD who was diagnosed SLE.

Case presentation 1

A 56-year-old woman with a history of SLE since the age of 53 with renal impairment (proteinuria = 1.44 g/24 hours, serum creatinine =357 μmol/L, kidney biopsy: Class III+V), hematologic impairment (lymphocyte count=960/mm3; normal range:1500-4000/mm3 ) and positive anti-DNA, anti-Sm and antinuclear (>1/1600) antibodies and Sjögren syndrome since the age of 53, presented, for a year, a non- bloody liquid diarrhea with a frequency of 4-5 stools per day. The colonoscopy concluded a congestive and ulcerative colitis with a stenosis of the ileocecal valve. Pathological examination of colon biopsies concluded that: The surface coating is sometimes normal, sometimes basophilic, of regenerative aspect. The coating of the crypts is hypercrine, with focal activity or even rare cryptic abscesses. The chorion is edematous and congestive and has a moderate inflammatory infiltrate, polymorphous abundance, with some lymphoid nodules but no obvious epithelioid granuloma. The crypts are of variable size and modified architecture. CD has been retained, after also eliminating by several explorations the medicinal, infectious causes such as tuberculosis, inflammatory causes and neoplasia. Magnetic resonance imaging did not show any gastrointestinal thickening or lymphadenopathy and found slight edema at the ileocecal valve level, leaving a margin of 4 mm Figure 1.

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The patient was in partial remission for LN under mycophenolate mofetil. The latter was switched by azathioprine and the corticosteroid dose was increased to 1mg / kg / day of prednisone for one month and then gradually decreased. For 12 months, renal remission was maintained and diarrhea disappeared.

Case presentation 2

A 37-year-old man with a history of stenosing ileocecal Crohn’s disease, reported with diarrhea, since the age of 33, for which he had corticosteroid therapy for 2 months and then azathioprine for 12 months. CD has been in remission for 3 years. He had presented skin lesions for one month, including a malar rash. SLE was diagnosed in the presence of malar rash, photosensitivity, proteinuria at 1.24 g / 24 hours, low C3 (C3=0.6 g/L; normal range: 0.8-1.8 g/L) and C4 (C4=0.1 g/L; normal range: 0.2-0.5 g/L) serum complements, a positive direct Coombs test and positive anti-DNA and anti-nuclear (1/800) antibodies. Renal function was conserved (serum creatinine = 56 μmol/L). Anatomopathological examination of the renal biopsy concluded LN class III. The patient had 3 pulses of methylprednisolone 1g/day then 1mg/ kg/day of prednisone for one month and progressive decrease. The patient had 6 courses of cyclophosphamide 500mg / 15 days and then a relay of azathioprine. LN has been in complete remission for 9 months.

Discussion

The mean age was found 38.0±9.4 years with range from 20 to 59 years. Regarding sex distribution of the study patients, it was observed that 31(62.0%) patients were female and 19(38.0%) patients were male. Complaints of the study patients, it was observed that 36(72.0%) patients had symptomatic, 29(58.0%) had pain in right upper abdomen (RUA), 27(54.0%) had nausea, 5(10.0%) had mass in RUA and 5(10.0%) had weight gain. Body Mass Index (BMI) was 26.1±3.6 kg/m2, systolic blood pressure (BP) was 119.9±19.9 mmHg and diastolic BP was 77.1±8.4 mmHg. The hematological and biochemical parameters were as follows: platelet count was 285.5±67.4 x109/L, FBS was 5.9±2.1 mmol/L, BS 2hrs ABF was 9.6±4.2 mmol/L, total cholesterol was 198.3±49.1 mg/dl, high density lipoprotein (HDL) was 38.0±9.3 mg/dl, triglyceride (TG) was 218.7±127.2 mg/dl, AST/ALT ratio was 1.0±0.8, ALP was 112.1±60.9 U/L, gamma glutamyl transpeptidase (GGT) was 43.3±33.7U/L, INR was 1.0±0.45, HOMA-IR was 2.52±1.79, serum albumin was 4.6±0.3 g/dl, and serum bilirubin was 0.6±0.3 mg/ dl. It was observed that the mean platelet count was statistically significant between non-NASH and NASH group but other baseline characteristics were not statistically significant in non-NASH and NASH group and stages of fibrosis.

Shor et al. have shown that the prevalence of CD in SLE is highest in the age group between 20 and 59 years [8]. This prevalence was zero at an age less than 20 years. A clear predominance of women has been shown in this review. Nagata et al reported a juvenile case [17]. The delay between the SLE and the CD varied, according to Yamashita’s review, between 3 and 36 years. Our two cases were in this interval. To the best of our knowledge, two cases of association between LN and CD have been reported [6,7], and one of them showed favorable renal response to Infliximab [6]. The SLE of one of these two patients preceded the CD [6] while the SLE of the other patient followed the CD [7]. Jit was jst like the case of our two observations. The LN class would be proliferative, because our two patients had a class III and that case of Principi was class IV [6]. We do not have enough detail of Sugimoto’s observation because it was written in Japanese [7].

A CD flare can reveal a SLE or be a trigger factor for lupus flare. Nitzan et al. reviewed 10 cases of patients with SLE and IBD [18]. At the moment the second disease was diagnosed the first one was not usually active. It is essential to keep in mind the SLE association with CD, especially if gastrointestinal symptoms develop in a wellcontrolled lupus patient. A colonoscopy with biopsy should be performed in these cases. Likewise, in patients with CD and various extra-intestinal manifestations, the coexistence of SLE should be considered [19,20]. Johnson et al. reported a case of CD preceded by SLE with Pyoderma Gangrenosum [21]. In a retrospective review of kidney biopsy specimens obtained from 83 patients with IBD, IgA nephropathy was the most common diagnosis (24% [20 of 83]), followed by interstitial nephritis (19% [16 of 83]) [22]. Any secondary glomerular nephropathy in a patient with IBD should suggest an SLE. To the best of our knowledge, all reported cases of SLE associated with CD are positive for anti-DNA antibodies [18,23]. De Jager PL et al. shown that the 16q12–13 region, which contains the CARD15 Gene variants associated with IBD, is linked to SLE [24]. However, two others studies have infirmed this result [25,26]. Further studies are thereby needed to resolve this issue. Our two observations report the rarity of the coexistence of the SLE and the CD. Counting the two cases reported in the literature and our two observations, LN remains extremely rare in CD.

Taking into account the harm that each of these two diseases can cause, it is imperative to screen SLE in a patient with CD having several extraintestinal manifestations and to detect CD in a wellcontrolled SLE with gastrointestinal manifestations.

Conclusion

Admittedly, the association between the SLE and the CD is extremely rare, especially the presence of lupus nephritis, a screening of one of these diseases in presence of the other is thus justified in front of any several extraintestinal manifestation in CD and any gastrointestinal manifestation in a well-controlled SLE.

Acknowledgment

None.

Conflict of Interest

No Conflict of Interest.

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