Human Chorionic Gonadotropin producing Tumor of the Cauda Equina

Human chorionic gonadotropin as a tumor marker.

Ectopic production and secretion of hormones by a wide variety of tumors has been known for decades. Initially, ectopic hormone secretion was recognized by signs and symptoms of excess circulating biologically active hormone. With development of more sophisticated assay techniques, biologically inactive fragments and "big" forms of authentic hormones have been identified in these syndromes. Rec...

Imaging the cauda equina

Human Chorionic Gonadotropin

A highly active preparation of human chorionic gonadotropin has been obtained by simple methods of column chromatography on diethylaminoethyl Sephadex and Sephadex G-100. The preparation appeared homogeneous by disc and immunoelectrophoresis, ultracentrifugation, and end group analysis. It assayed at 12,000 i.u. per mg by the rat prostrate gland and accessory sex organ method. The ~20,~ value w...

Paragangliomas of the cauda equina.

Intrathecal paragangliomas are an unusual cause of the cauda equina syndrome. Although well documented in the neuropathology and neurosurgery literature, only one case report has appeared in the radiology literature to date [1]. Recognition of the tumor is important because of its biologic characteristics ; which differ significantly from ependymoma, the tumor with which it is most commonly con...

Paraganglioma of the Cauda Equina

● Received: January 25, 2015 ● Revised: February 10, 2015 ● Accepted: February 11, 2015 Corresponding Author: Miguel Gelabert-González, MD University of Santiago de Compostela (Spain), San Francisco 1, Santiago de Compostela, Spain Tel: +34981950331, Fax: +34981950404 E-mail: [email protected] ◯∝This is an Open Access article distributed under the terms of the Creative Commons Attribution ...