New observations concerning choroidal osteomas

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Updated: Oct 23, 2026

Observation of the Ciliary Movement of Choroid Plexus Epithelial Cells Ex Vivo

Observation of the Ciliary Movement of Choroid Plexus Epithelial Cells Ex Vivo

Published on: July 13, 2015

J D Gass

International Ophthalmology

|February 1, 1979

Abstract:

The clinical and laboratory findings in fifteen patients with nineteen eyes containing choroidal osteomas are summarized. The first case of the disease in a male patient is reported as well as the development of a second tumor in the previously uninvolved eye of an adult patient and the marked enlargement of the tumor in another. The possible etiology of the choroidal osteomas is discussed.

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Osteoclasts in Bone Remodeling

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Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during bone...

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