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Biomedical subjects

R Michiels

Publications and source records attributed to R Michiels.

124 records · Page 7Linked to original sources
PubMedDate not supplied

[Malignant cutaneous hemangioendothelioma. Clinicopathological and ultrastructural aspects (author's transl)].

Malignant cutaneous angio-endothelioma are tumors which develop from vascular endothelium. This is a study of one case along with the data compiled from 118 previously published cases. Clinically, this rare tumor is chiefly seen before the age of twenty of after sixty. Its appearance is polymorphic and often misleading. The clinical course of this disease in adults is always fatal, however, in children 20 p. 100 of the cases are reported curable. The histological picture shows a polymorphic pattern associated with vascular channels anastomosing in a plexiform network with large lacunae surrounded by papillary vegetations and plaques of fusiform, sarcomatoid cells as well as areas of angioblastic secretory cells. The ultrastructural study confirms that the tumor originates from endothelial cells which have lost their capacity to cover the capillary walls.

Aged↗
PubMedDate not supplied

[Unusual cause of intestinal invagination: congenital polypoid-form gastric heterotopia. Study of a case and review of the literature].

The authors report a case of polypoid heterotopic gastric mucosa in the ileum presenting as intussusception with hypochromic anemia in a 6 year-old boy. Tumorous heterotopic gastric mucosa in the small bowel is very uncommon. So far 22 similar cases have been published in the literature. This congenital intestinal anomaly is discovered in one third of the cases during the first decade. In 9 of 23 cases gastric heterotopia was diagnosed after an ileal resection for intussusception induced by the heterotopia presenting as a pedunculated or sessile polyp. In our case the great number of the polypoid formations is exceptional and has not been previously described.

Child, Preschool↗