Benign retroperitoneal schwannoma presenting as colitis: A case report

We report a case of a patient presenting with clinical , radiological and endoscopic features of colitis due to a compressive left para-aortic mass. Total open surgical excision was performed, which resulted in complete resolution of colitis. Histopathology and immunohistochemistry revealed benign retroperitoneal schwannoma. These neural sheath tumors rarely occur in the retroperitoneum. They are usually asymptomatic but as they enlarge they may compress adjacent structures, which leads to a wide spectrum of nonspecific symptoms, including lumbar pain, headache, secondary hypertension, abdominal pain and renal colicky pain. CT and MR findings show characteristic features, but none are specific. Schwannoma can be isolated sporadic lesions, or associated with schwannomatosis or neurofibromatosis type II (NF2). Although they vary in biological and clinical behavior, their presence is, in nearly every case, due to alterations or absence of the NF2 gene, which is involved in the growth regulation of Schwann cells. Both conditions were excluded by thorough mutation analysis. Diagnosis is based on histopathological examination and immunohistochemistry. Total excision is therapeutic and has a good prognosis. Schwannomatosis and NF2 should be excluded through clinical diagnostic criteria. Genetic testing of NF2 is probably not justified in the presence of a solitary retroperitoneal schwannoma

Documenting an Endangered Sign Language: Constructing a Corpus of Langue des Signes Malienne (CLaSiMa)

Language Use in Past and Presen

The significance of African sign languages for African linguistics and sign language studies

Language Use in Past and Presen

Shared sign languages

Language Use in Past and Presen

Le trésor de chefferie de Bafut : un musée ?

Fig. 1 : Localisation de la chefferie de Bafut (© Y. Paquay, 1996). Bafut, province du Nord-Ouest, Cameroun. Environ 100 000 habitants pour 420 km2 (fig. 1). Bafut, une chefferie (fondom), un mfor – chef sacré –, un kwifor – société régulatrice des gens du commun –, un pouvoir centralisé. L’objet de cet article n’est pas de déterminer si la collection dont il va être question, comme ses modes de gestion, constituent un « musée avant la lettre » ou pas – ils le sont clairement –, mais bien d..

Sign languages in Africa

Language Use in Past and Presen

Sign language fieldwork

Language Use in Past and Presen