A198 LEFLUNOMIDE-INDUCED COLITIS IN IMMUNOSUPPRESSED PATIENT WITH SYSTEMIC LUPUS ERYTHEMATOSUS AND RHEUMATOID ARTHRITIS
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Résumé
Abstract Background Leflunomide is an oral disease-modifying antirheumatic drug (DMARD), with anti-inflammatory and immunomodulatory properties that has been in use since 1998. Common leflunomide side-effects include gastrointestinal symptoms (nausea, abdominal pain and diarrhea), occurring in 10–20% of patients treated with leflunomide. Scarce evidence exists that leflunomide can cause colitis. Aims We present the case of a 61-year-old female, with Lupus Erythematosus who presented with colitis induced by long-term leflunomide treatment. Methods Case report and review of literature Results A 61-year-old female was seen by the gastroenterology team with complaints of diarrhea ongoing for 6 weeks associated with 10 lb weight loss. The patient had a complex medical history, including lupus, hypothyroidism, asthma, atrial fibrillation, recurrent C. difficile infection, Bell’s palsy and avascular necrosis secondary to long-term corticosteroid therapy. Previous immunosuppressive therapies included prednisone, mycophenolic acid (Myfortic), hydroxychloroquine, azathioprine, mycophenolate (CellCept) but due to multiple intolerances, she was initiated on leflunomide in 2014 and has been maintained on it since. Stool analysis ruled out infectious causes. COVID-19 testing was also negative. A CT of the abdomen revealed pancolitis. This was confirmed on colonoscopy, which revealed mild, Mayo 1 pancolitis and normal terminal ileum. She was initiated on Mezavant as a treatment for possible ulcerative colitis. However, during the hospitalization her symptoms, worsened and bloody diarrhea was noted. She underwent a subsequent endoscopic evaluation which revealed more severe disease, Mayo 2–3 colitis, with mucosal hyperemia and ulcerations, as well as effacement of the vasculature. Initial pathology results revealed mild colitis, but repeat pathology results revealed moderate active colitis, with cryptitis, crypt abscesses and significant apoptosis consistent with drug-induced colitis. Given these findings, the diagnosis of leflunomide-induced colitis was made. Leflunomide was therefore discontinued, the patient was initiated on a higher dose of corticosteroids and cholestyramine was initiated. Following these measures, her diarrhea resolved. Conclusions Leflunomide may cause diarrhea in up to 33% of patients. Challenges related to the diagnosis of leflunomide-induced colitis exist, including the rarity of the diagnosis, a not completely understood mechanism for acute leflunomide-induced diarrhea, as well as variable endoscopic and histologic findings associated with the diagnosis. This report illustrates a case of leflunomide-induced colitis which should be considered in patients on leflunomide, who present with symptoms of abdominal pain and diarrhea, even years after medication initiation. Funding Agencies None
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Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découle