Related Experiment Video
Updated: Apr 19, 2026

Seven Steps to Stellate Cells
Published on: May 10, 2011
[A rapidly progressive orbital tumor in a seven-year-old girl revealing a primitive systemic vasculitis]
Cécile Picard1, Florent Borgnat2, Marie-Caroline Chastang3
1Centre de pathologie Est, groupement hospitalier Est, 59, boulevard Pinel, 69500 Bron, France.
Abstract:
Orbital tumor lesions in pediatric population encompass a wide range of pathological processes, which are very different in etiology and prognosis. They usually require an emergency in histological diagnosis because of their quick growth. Beside malignant and benign tumors, the inflammatory pseudo-tumors group included dysimmune orbital involvement secondary to systemic vasculitis such as granulomatosis with polyangiitis (ex-Wegener's granulomatosis). We report the case of a seven-year-old girl suffering from a severe primitive ANCA vasculitis, revealed by an orbital mass.
Related Concept Videos
Nephrotic Syndrome I : Introduction
Vascular Spasm
Overview of Systemic Arteries
Systemic circulation is the part of the cardiovascular system that carries oxygenated blood away from the heart to the body's tissues and returns deoxygenated blood back to the...
Pericarditis I: Introduction
Overview of Systemic Veins
The coronary sinus, the heart's principal vein, resides in the coronary sulcus on the heart's posterior aspect. This broad venous channel receives nearly all venous blood from the myocardium, the heart muscle. It is fed by three primary veins: the great cardiac vein, the...
Cytotoxic Edema: Pathophysiology

