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Introduction: Vulvar involvement in Crohn's disease is uncommon. We report here a rare case of Crohn's disease affecting only the vulva and perineum., Case: A 55-year-old women had been followed at another hospital since 1995 for histology-proved Crohn's disease affecting only the vulvoperineal area. Treatment with infliximab led to a relapse in 2001. The patient was hospitalized because of a new vulvar and perineal flare-up, with major vulvar edema, aphthoid vulvar and perineal erosions and fissures. Findings from upper endoscopy and colonoscopy were normal. A biopsy sample of the ulcerated tissue showed inflammatory infiltration including histiocytes and macrophages. No microorganisms were found. The initial course was favorable, with systemic corticosteroid therapy and azathioprine. Clinical relapse during the corticosteroid tapering necessitated infliximab., Discussion: Vulvar localizations of Crohn's disease are uncommon. They may precede gastrointestinal involvement by many years or very rarely be isolated, as here. Typical clinical appearance includes edema and ulcerations. Other causes of granulomatous vulvar and perineal lesions must be ruled out. There is no consensus for its treatment. This case indicates that infliximab, which is used in fistulized Crohn's disease, can be useful for vulvar and perineal involvement. Physicians must recognize that on rare occasions vulvar involvement is possible without any gastrointestinal localization.

Introduction: Primary retroperitoneal synovial sarcoma is a rare malignant neoplasm that typically arises in young adults. We report here an unusual presentation of this tumor during hemorrhagic shock and retroperitoneal hematoma., Case: A 31-year-old man was admitted complaining of acute violent pain of the right lower abdominal quadrant. Physical examination was normal. The computed tomography scan showed a heterogeneous retroperitoneal mass near the iliac bifurcation, with a diameter of 3 cm and spontaneous contrast. The tumor ruptured shortly afterwards and the patient underwent emergency surgery for hemorrhagic shock and retroperitoneal hematoma. No metastases were observed. Although six cycles of doxorubicin and ifosfamide led to initial clinical and tomographic remission, relapse occurred 17 months later., Discussion: Only 20 cases of primary retroperitoneal synovial sarcoma have been described. They are most often discovered following abdominal pain or anemia. Tumor rupture with retroperitoneal hematoma has not previously been reported. Surgical ablation remains the basis for management of this tumor, and survival appears to depend on its quality. Prognosis is poor. Our case is original by the tumor's location and mode of discovery.

Diagnosis of major hypereosinophilia (>1500 x 10(9)/L) is complex because the possible causes cover the entire range of medical specialties. History and clinical condition will usually suggest parasitic or allergic diseases or drug reactions. When workups for them are negative, rarer causes must be suspected: specific organ diseases (chronic eosinophilic pneumonia, bullous pemphigoid, etc.), solid tumor, clonal blood disorders, or vasculitis. When the condition is prolonged and unexplained, hypereosinophilic syndrome is diagnosed. A rare disorder, its prognosis depends on largely on its cardiac effects. It is usually associated with heterogeneous hematologic conditions, mainly myeloproliferative and lymphocytic disease. The myeloproliferative or primary variant sometimes follows chromosomal deletions that cause a fusion between the Fip1-like1 (FIP1L1) and platelet-derived growth factor receptor (PDGFR) genes, thus increasing the tyrosine kinase activity of the latter. Imatinib mesylate, a tyrosine kinase inhibitor, is usually effective in this situation. In the lymphocytic variant, hypereosinophilia is secondary to a primitive Th2 lymphocyte expansion that causes overproduction of interleukin 5 (IL-5). Corticosteroids are the first-line therapy. Mepolizumab, an anti-IL-5 monoclonal antibody, currently being evaluated, seems promising. Despite recent progress, about 40% of the cases of hypereosinophilic syndrome remain unexplained.