Orbital Myogenic Tumors Orbital Rhabdomyosarcoma General Considerations Tumors of skeletal muscle derivation that can develop in the orbit include rhabdomyoma, rhabdomyosarcoma (RMS), and malignant rhabdoid tumor (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30). Tumors of smooth…
Orbital Peripheral Nerve Tumors Orbital Schwannoma (Neurilemoma) General Considerations Schwannoma (neurilemoma) is a benign, encapsulated tumor that arises from the Schwann cells that ensheath peripheral nerves. It can arise primarily…
Orbital Cystic Lesions Orbital Dermoid Cyst General Considerations Cystic lesions in the orbit are fairly common (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25). In the authors’ series of 1,264 orbital masses seen on the oncology service,…
Inflammatory Lesions That Simulate Neoplasms Thyroid-Related Ophthalmopathy General Considerations There are a number of orbital inflammatory processes that are important in the differential diagnosis of orbital tumors. The most important…
Conjunctiva Melanocytic Lesions Conjunctival Melanocytic Nevus General Considerations Nevus is the most common melanocytic conjunctival tumor (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34). In the authors’ clinical series of 1,643 conjunctival tumors, there were 454 nevi,…
Miscellaneous Lesions tha Simulate Conjunctival Neoplasms Conjunctival Epithelial Inclusion General Considerations Several primary cystic lesions can occur in the conjunctiva (1,2,3,4,5,6,7,8,9,10,11,12,13). Although conjunctival epithelial inclusion cyst is a very common…
Surgical Management of Conjunctival Tumors Surgical Management of Conjunctival Tumors It is important that malignant or potentially malignant conjunctival tumors be completely removed with as little manipulation as possible. The…
Conjunctival Lymphoid, Leukemic, and Metastatic Tumors Conjunctival Lymphoid and Plasmacytic Tumors General Considerations A lymphoid tumor can occur in the conjunctiva as an isolated condition or it can be a…
Caruncular Tumors Caruncular Tumors General Considerations The caruncle lies at the inner canthus nasal to the plica semilunaris. It has a nonkeratinizing epithelial lining similar to conjunctival epithelium. However, the…
Conjunctival Neural, Xanthomatous, Fibrous, Myxomatous, and Lipomatous Tumors Conjunctival Neuroma and Neurofibroma Several related soft tissue tumors appear to derive from neural, histiocytic, fibrous myxomatous, or lipomatous elements of the…
