[Exceptional location of hydatid cyst: primary hydatid disease of the mesentery]. / Localisation exceptionnelle du kyste hydatique: l'hydatidose primitive du mesentere. l'hydatidose primitive du mésentère.

The hydatid cyst of the mesentery is a rare localization of hydatid disease; most often it is secondary to a hydatid cyst of the liver. Its primitive form remains exceptional and is due to an arterial haematogenous dissemination. We report a case of primary hydatid cyst of the mesentery in a patient of 43 years. The diagnosis was established by ultrasonography and computed tomography with positive hydatid serology. The aim of this work is to remind, through this observation and a literature review, clinical aspects and therapeutic management of this disease.

Le kyste hydatique du mésentère est une localisation rare de la maladie hydatique, le plus souvent elle est secondaire à un kyste hydatique du foie. Sa forme primitive reste exceptionnelle et serait due à une dissémination hématogène par voie artérielle. Nous rapportons un cas de kyste hydatique primitif du mésentère chez un patient de 4 3 ans. Le diagnostic a été établi par l'échographie et la tomodensitométrie avec une sérologie hydatique positive. Le but de ce travail est de rappelé, à travers cette observation et une revue de la littérature, les aspects cliniques et la conduite thérapeutique de cette maladie.

[Malignant adrenocortical tumour with inferior vena cava invasion]. / Le corticosurrénalome avec envahissement de la veine cave inférieure.

Carcinoma of the adrenal cortex is a rare tumour. The incidence of vena cava involvement may be present in 15 to 20% of patients. The intra caval tumour thrombus can attain the right atrium. Even if some authors consider these lesions as a metastasis, long-term survival can be obtained after radical resection. The surgical tactical depend on the extension of thrombus into the vena cava inferior. The authors report a case with 4 years survival without recurrence after surgical treatment.

[Leiomyoma of the esophagus]. / Léiomyome de l'oesophage.

BACKGROUND: Leiomyoma is a benign tumor rarely occurring in the esophagus. Only 1% of esophageal tumors are leiomyomas. CASE REPORT: A 70-year-old man underwent surgery for an asymptomatic tumor of the thoracic esophagus. The tumor was enucleated via right thoracotomy and histology confirmed the diagnosis of leiomyoma. Outcome was favorable. DISCUSSION: Leiomyomas of the esophagus generally develop from the muscularis and exceptionally from the muscularis mucosae, producing a parietal tumor or a pediculated endoluminal tumor respectively. Surgery is indicated for all cases, with the possible exception of asymptomatic leiomyoma. Encleation can be achieved by videothoracoscopy. Resection of the esophagus can be discussed if enucleation is impossible for giant tumors, or ring tumors at the esogastric junction, or if the mucosae wound cannot be repaired. Endoscopic resection is indicated for pediculated leiomyoma. Malignant transformation is exceptional but an association between esophageal myomatosis and carcinoma of the esophagus is possible. Certain authors thus advocate resection for all cases, even small asymptomatic leiomyomas.

[Inflammatory pseudotumors of the kidney: a case report]. / Les pseudotumeurs inflammatoires du rein: à propos d'un cas.

Inflammatory pseudotumors are uncommon benign tumors of unknown etiology which may develop at several anatomical sites, e.g., the airways and gastrointestinal tissues, soft tissues, the orbit, the spleen, or the lymph nodes. The renal site is extremely rare, and presents the problem of differential diagnosis as the clinical and radiological aspects of this tumor are similar to those of an adenoma or an angiomyolipoma, and suggest the presence of a carcinoma, in particular a cystic renal carcinoma which is also a rare form of tumor. There is therefore a risk that this benign lesion could be misdiagnosed. Due to the good prognosis associated with this type of tumor, in cases where the definitive diagnosis has been established no surgical procedure is necessary. However, the difficulty in making this diagnosis preoperatively means that in general the organ has to be surgically removed so that a histological analysis can be made and the negative or positive findings confirmed. In the present study, the case of an inflammatory pseudotumor of the kidney has been described. In this instance, radical nephrectomy of the left kidney was carried out as the disease was presumed to be renal cell adenocarcinoma. However, the histopathological analysis was negative as regards malignancy, and indicated the presence of an inflammatory pseudotumor. This article raises the question of the problem in establishing a preoperative definitive diagnosis, as a correct diagnosis is often only confirmed following nephrectomy (in cases where the contralateral kidney is healthy).