[Diagnosis of hepatocellular carcinoma by needle puncture--aspiration and cytological test. The experience in Cameroon]. / Diagnostic du carcinome hépato-cellulaire par ponction-aspiration à l'aiguille et examen cytologique. L'expérience du Cameroun.

The authors report their experience of the diagnosis of hepatocellular carcinoma using needle aspiration cytology over a four year period (1989-1992). In 116 of the 119 patients presenting with histologically proven hepatocellular carcinoma, the diagnosis was previously established by cytology. This method has a 97% sensitivity. Also, in forty patients without hepatocellular carcinoma, previous cytology did not detect any carcinomatous cells and therefore recorded a 100% specificity. Thus, cytologic diagnosis of hepatocellular carcinoma is possible. In countries with limited resources in which this carcinoma is widespread, needle aspiration cytology needs to be well known and used.

[Diagnosis of maxillo-facial Burkitt's lymphoma by needle puncture and cytologic examination. Experience in Cameroon]. / Diagnostic du lymphome de Burkitt maxillo-facial par ponction à l'aguille et examen cytologique. L'expérience du Cameroun.

The authors report their experience on diagnosis of maxillo-facial Burkitt's lymphoma using needle aspiration and cytology. In all the 21 patients presenting a histological proved Burkitt's lymphoma, the diagnosis was done before with cytology. This method has a 100% sensibility. Thus, cytologic diagnosis of maxillo-facial Burkitt's lymphoma is very reliable. In tropical areas with little revenues and where Burkitt's lymphoma is frequent, needle aspiration and cytology need to be well known and used.

[The azygos or vertebro-parietal venous anastomotic system]. / Le systeme azygos ou systeme veineux anastomotique vertebro-parietal

This experimental work, realized on a group of 25 monkeys, aims at determining the correct circulatory direction in rachis veins and the importance of the vertebral veinous circulation in the general return circulation. Radiophysiological tests defined the azygopetal direction of the vertebral circulation, the role of the intercavous shunt of this circulation with or without obstacle, and the possibility, under certain conditions, for pelvic blood to accede to cranial sinuses. Physiopathological tests (with iode 131 and BSP) contributed to prove that vertebral veinous circulation drains 5 to 10% of lower extremity, pelvic and sus-mesocolic visceral and cranial contents circulation.