Periocular cutaneous oncocytoma with signs of disrupted oxygen metabolism
Article first published online: 20 SEP 2013
© 2013 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd
Journal of Cutaneous Pathology
Volume 40, Issue 12, pages 1054–1058, December 2013
How to Cite
Periocular cutaneous oncocytoma with signs of disrupted oxygen metabolism., , , , , , , , , .
- Issue published online: 26 NOV 2013
- Article first published online: 20 SEP 2013
- Accepted manuscript online: 3 SEP 2013 12:49PM EST
- Manuscript Accepted: 24 AUG 2013
- Manuscript Revised: 6 AUG 2013
- Manuscript Received: 26 JUN 2013
- ocular adenoma;
- oxygen metabolism
Oncocytomas are benign tumors most often occurring in salivary or lacrimal glands and thyroid tissue. As cutaneous oncocytoma is exceptionally rare, this tumor is uncommonly encountered by dermatopathologists. Herein, we illustrate the case of an 80-year-old man who presented with a slowly growing papule of the lower eyelid. Histopathologically, the adenomatous tumor was composed of large monomorphic cells with eosinophilic granular cytoplasm. Electron microscopy revealed abundant, enlarged and abnormally shaped mitochondria. These findings were consistent with an oncocytoma of the skin. The presented case is unique in that the thorough work-up of the tumor tissue revealed not only hyperplastic mitochondria, representing the ultrastructural correlate of the observed granular cytoplasm, but additionally disclosed functional consequences with elevated levels of reactive oxygen specimen (ROS) within the tumor. Disrupted oxygen metabolism may result from cellular aging processes and may putatively represent the underlying pathogenesis of oncocytoma.