Uterine Retiform Sertoli-Leydig Cell Tumor Report of a Case Providing Additional Evidence That Uterine Tumors Resembling Ovarian Sex Cord Tumors Have a Histologic and Immunohistochemical Phenotype of Genuine Sex Cord Tumors

Summary: We report a case of a retiform Sertoli-Leydig cell tumor of intermediate differentiation presenting as a uterine intracavity polypoid mass in a 63-year-old woman. In contrast to sertoliform endometrioid carcinoma and to hitherto reported uterine tumors resembling ovarian sex cord tumors (UTROSCTs), which are primarily characterized by tubular glands and solid tubules, this tumor, which most likely represents a UTROSCT, showed a large spectrum of histologic features typical of a genuine retiform Sertoli-Leydig cell tumor. The diagnosis was confirmed by a battery of immunohistochemical stains, which also served as a tool for differential diagnosis with other neoplasms. The tumor cells were positive for broad spectrum keratin (CK) CK18, vimentin, calretinin, and progesterone receptor. Only a few isolated cells stained for inhibin. The tumor cells were negative for CK7, CK5/6, epithelial membrance antigen (EMA), carcinoembryonic antigen (CEA), carbohydrate antigen 125 (CA125), thrombomodulin, 013 (CD99), melan A, alpha-fetoprotein (AFP), placental alkaline phosphatase (PLAP), a-1-antitrypsin, estrogen receptor, S100, neusone specific enolase (NSE), chromogranin, synaptophysin, desmin, caldesmon, and CD10. Divergent differentiation of uterine cells seems to be the most likely pathogenetic mechanism. To the best of our knowledge, no UTROSCT showing such a variety of histologic features indicative of a true sex cord tumor has been reported before

Symposium International sur les Micro-paléontologiques Belges

An international conference was held in Belgium, 2-10 September 1974, to discuss a complete revision of the biostratigraphy of the Devonian and Lower Carboniferous. The symposium was held in the field to permit participants to collect from the classic sections of the Dinant synclinorium and the Namur "synclinal". An example of the detailed bio-stratigraphic work that has been done is provided by one section in the Famennian, which has been subdivided into 73 micropaleontological zones a degree of subdivision even greater than the subdivision of the Cenozoic on the basis of microplankton. Although many of these zones may be of local significance, it is clear that the region visited constitutes a remarkable stratigraphic succession, where subsidence continued for a long time and where practically all miogeosynclinal facies interfinger. Knowledge of the biostratigraphy of this area is well-advanced and it may be expected to serve as a valuable standard of reference. (Summary prepared by the editor)

Sédimentologie des facies Marbres noirs du paléozoique franco-belge

Doctorat en Sciencesinfo:eu-repo/semantics/nonPublishe

Sédimentation des Faciès "Marbres Noirs" de la Belgique et du Nord de la France

SCOPUS: ar.kinfo:eu-repo/semantics/publishe

Taxonomy of Visean marine calcareous algae, Fernie, British Columbia (Canada)

Reports a diverse microflora from the Late Viséan Opal Member, Fernie, Rocky Mountains, Canada. A shallow-water limestone level yields forty identifiable taxa of green and red algae associated with microproblematica. Four species are new: Cabrieropora opalae, Cribrokamaena ferniensis, Koninckopora pachytheca and Moravammina? enigmatica. Inferred sedimentation is open marine, in normal salinity, from the middle part of the euphotic zone, within the fair-weather wave zone. A semi-restricted lagoon located nearby provides floated calcispheres. The high diversity is due to the excellent preservation of the thalli which were protected by a thin early coating of bacterial micrite.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

The hunt for Cummingsella (Carboniferous, Chlorophyta)

Until recently Cummingsella was only known by two rare and puzzling species, erected on very limited material. The genus was therefore considered as representing a very uncommon and puzzling form that played no role in carbonate sedimentation. Recent studies of Visean carbonates in the American Midcontinent have disclosed a prolific Cummingsella flora that indicates the proximity of an algal bant Cummingsella can therefore be considered locally abundant and cosmopolitan (Europe, Australia, North America), ranging in age from the Tournaisian to the Namurian (Serpukhovian).SCOPUS: cp.jinfo:eu-repo/semantics/publishe