Eyelid Stromal Tumors

Eyelid stromal tumors could be considered under several distinct categories based on the tissue of origin: fibrous tissue tumors; fibrohistiocytic tumors; lipomatous tumors; smooth muscle tumors; skeletal muscle tumors; vascular tumors; perivascular tumors; neural tumors; lymphoid, plasmacytic, and leukemic tumors; cartilage and bone tumors; secondary tumors; metastatic tumors; and hamartomas, choristomas, and other miscellaneous lesions. Some of the inflammatory and infective conditions such as chalazion, pyogenic granuloma, verruca vulgaris, and molluscum contagiosum may manifest with features clinically simulating tumors. This chapter describes the salient features and management of common eyelid stromal tumors. It would be worthwhile to mention here that further information on clinical classification of tumors of the eye could be obtained from the 8th edition of TNM which encompasses several important changes over the previous 7th edition. It is also important to note that the 5th edition of WHO blue book on classification of tumors takes into consideration the tumors of oculo-adenexal soft tissue/bone tumors and hematolymphoid tumors into separate chapters similar to the approach to other organ systems. It also elaborates on disease codes, imaging, macroscopic details, cytology, and molecular pathology as applicable.