introduction: osteoma is a benign tumor rarely found in the paranasal sinuses.   case report: a 30-year-old female presented with an 8-month history of proptosis of the right eye that was progressing slowly. she was diagnosed with ethmoid osteoma and managed with collaborative surgery at the ophthalmology and otolaryngology departments. after surgery, the patient suffered visual loss that was m...

Malignant rhabdoid tumor (MRT), originally described as a sarcomatous variant of Wilms' tumor, is now recognized as a distinct, highly malignant entity. The authors describe, for the first time, a primary tumor of the orbit with histologic, immunohistochemical, and ultrastructural features of MRT. Their findings suggest both epithelial and mesenchymal differentiation of this unique tumor.

Orbital inflammatory pseudotumor is a rare complication of systemic lupus erythematosus. It may present a challenge for differential diagnosis, especially in the context of treatment with hydroxychloroquine, although dosage and duration of the treatment may guide us. Although high antibody titers can be found, this is not specific.

PURPOSE To report an unusual case of spontaneous late leakage of filtering bleb in a patient with orbital pseudotumor. METHODS Single case report. RESULTS A 53-year-old woman developed spontaneous leakage of bleb in her right eye 23 years after trabeculectomy with application of mitomycin-C (MMC). Two weeks later, her symptoms were blurring of vision, increasing redness, and dull ocular pai...

Other tumors include vascular tumors (e.g. hemangiomas, lymphangioma), lacrimal gland tumors (e.g. dacryoadenitis, benign mixed tumor, sarcoidosis and adenoid cystic carcinoma), and growths that extend from the sinuses into the orbit (e.g. squamous carcinoma, mucocele). Metastatic cancer can also form an orbital tumor. Lastly, an orbit tumor can also be caused by inflammation (e.g. pseudotumor,...

CASE REPORT A 74-year-old male presented with an orbital tumor located in the left lacrimal fossa. Ocular examination showed hypotropia, exophthalmos and palpebral ptosis. DISCUSSION Removal of the tumor was performed by a lateral orbitotomy. The histopathologic study showed a tumor consistent with an adenocarcinoma of the lacrimal gland with apocrine differentiation.

PURPOSE To report a case of orbital oculomotor nerve schwannoma extending to the cavernous sinus through the superior orbital fissure presenting with proptosis, but without any neurological sign. CASE REPORT A 32-year-old man presented with axial proptosis of his left eye. Visual acuity and other ocular examinations were normal. Orbital magnetic resonance imaging revealed a well-defined fusif...

BACKGROUND MALT lymphomas were classified for differential diagnostics of IgG4-dependent disease due to their exceptional predilection to intraorbital localization. Therefore, the goal of our studies was large retrospective analysis of patients diagnosed with MALT lymphomas within the orbital tissues, since no such studies have been conducted in Poland. MATERIAL/METHODS The starting study pop...

PURPOSE To evaluate the outcome of surgical excision of large and massive orbital tumors. To the best of our knowledge, this is the first article to evaluate the relationship between the size of orbital tumors and the surgical outcome. METHODS We retrospectively reviewed the charts of 34 consecutive patients affected by large or massive orbital tumors that underwent orbitotomy with en-bloc ex...

BACKGROUND AND PURPOSE Accurate discrimination of orbital lymphoma from benign orbital lymphoproliferative disorders is crucial for treatment planning. We evaluated MR imaging including DWI and contrast-enhanced MR imaging for differentiating orbital lymphoma from benign orbital lymphoproliferative disorders. MATERIALS AND METHODS Forty-seven histopathologically proved orbital lymphoprolifera...