Une occlusion intestinale inhabituelle.

Malignant melanoma is a rapidly metastatic disease. Metastasis in the small intestine is as such not uncommon, whereas the clinical presentation of obstruction due to intussusception is very rare. We hereafter report the case of a 58-year-old female admitted with general degradation, syndrome of intestinal occlusion and a cervical mass. Imaging studies showed signs suggesting an invagination of the small intestine. A resection of the cervical mass and segmental small intestine resection were performed. Pathological findings revealed a cervical malignant melanoma spread into the small intestine. The diagnosis of intestinal metastasis should therefore be considered in patients with intestinal occlusion and history of melanoma and presenting gastrointestinal symptoms.info:eu-repo/semantics/publishe

Sclérose tubéreuse de Bourneville et polypose colique

Tuberous sclerosis is an autosomal dominant genetic disorder that is characterized by epilepsy, mental retardation and facial angiofibromas. Usually, the disease is diagnosed in childhood but there are frustrates form of tuberous sclerosis with or without genetic mutation. This clinical case about a man who is diagnosed a colonic polyposis, a rectal adenocarcinoma and a tuberous sclerosis. .SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Edaphic specialization in relation to termite mounds in Katanga (DR Congo): A reciprocal transplant experiment with congeneric tree species

Question: Do termitophilous and non-termitophilous trees of dry tropical woodlands show local adaptation? Location: Region of Lubumbashi, Upper Katanga, DR Congo. Methods: Three pairs of congeneric tree species showing strict edaphic specialization with respect to termite mounds, Combretum molle (termitophilous, T)/C. collinum (non-termitophilous, NT); Strychnos potatorum (T)/S. spinosa (NT), Ziziphus mucronata (T)/Z. abyssinica (NT), were used in a reciprocal transplant experiment in situ. Seedlings were reciprocally transplanted on termite mounds and in the surrounding matrix in a miombo woodland. Growth (height and number of leaves) and survival were monitored for 30 months. Soil physical and chemical properties, and available water, were assessed on and off mounds. Results: Growth was little affected by habitat; only one species showed better growth in its home habitat (S. spinosa in the matrix). Survival was strongly affected by habitat, in opposite directions consistent with species’ habitat specialization. Termitophilous species experienced a very high mortality rate in the matrix, especially during the dry season. Available water content was higher in termite mound soil than in the matrix soil. Conclusions: Termitophilous and non-termitophilous tree species show local adaptation at the seedling stage, expressed mostly as different patterns of mortality in the dry season. The results point to water supply as a critical factor in the edaphic specialization of termitophilous species. In contrast, the higher mortality of non-termitophilous species on termite mounds is not explained by water stress.SCOPUS: ar.jinfo:eu-repo/semantics/publishe