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Objective: To determine the effect of folic acid supplementation in Behçet's disease (BD) patients with ocular involvement associated with hyperhomocysteinemia (Hhcys)., Patients and Methods: 19 BD patients, all with uveitis and/or retinal vasculitis associated with Hhcys (plasma hcy > 15 micromol/l) were prospectively included. Patients were divided into 2 groups. Group 1 consisted of 11 patients that received folic acide (15 mg/d) in addition to their previous standard treatment. Group 2 included 8 patients treated only with their previous standard treatment. Visual acuity and uveitis attacks were assessed initially and monthly at each visit in all groups. Mean Visual acuity and frequency of uveitis attacks were evaluated quarterly., Results: In group 1, the mean plasma hcys level was significantly lower after than before the treatment period (27.7 vs 13.1 micromol/l; p= 0.04) while it did not vary significantly in the same period in Group 2 patients. Frequency of uveitis attacks was significantly lower after than before treatment at each quarter in groupl and mean visual acuity in this group increased from 4.33 to 5.44 decimals. During the treatment period, the mean number of uveitis attacks, converted to frequency per 12 months were significantly lower in group 1 than in group 2. During this period, the VA slightly increased in group 1 and decreased in group 2 but the difference was not significant., Conclusion: Our results indicate that folates supplementation is useful for BD patients with Hhcys.

Introduction: Extranodal involvement in sinus histiocytosis with massive lymphadenpathy (SHML) or Rosai-Dorfman disease is common, seen in 43% of cases. We present a case of disseminated form of SHML with thyroid, renal, bone and lung involvement., Exegesis: A 53-year-old woman presented with cervical lymphadenopathy and a large palpable mass in the submandibular area. A thyroid nodule was palpable. Laboratory data showed an increase of the erythrosedimentation rate and a polyclonal hypergammaglobulinemia. Histopathological examination of a cervical lymph node biopsy showed typical features of SHML. CT scan showed enlargement mediastinal lymph node, mass of the right lung and infiltrative mass in the right renal hilium. Radiographs revealed lytic lesions in the right proximal tibia and left patella. Histopathology of a biopsy from the kidney mass and thyroidectomy displayed typical characteristics of SMHL. The patient was treated by steroids with a markedly regression of the kidney and renal masses., Conclusion: Multiple extranodal involvement in SMHL is rare, the prognosis may be poor when lesions are massive and involve vital organs.