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We describe a case of a venous hemangioma that arose in the optic nerve sheath of the orbital apex in a 28-year-old man who presented with progressive vision loss. To the best of our knowledge, this is the first reported case of a venous hemangioma occurring at this location. A definitive diagnosis and partial excision was achieved via an endoscopic transsphenoethmoid approach with interactive, computer-assisted, frameless stereotactic surgical navigation. The intervention resulted in minimal morbidity, demonstrating yet again that this surgical approach is a safe and effective way to treat lesions of the orbital apex. [ABSTRACT FROM AUTHOR]

Ossifying fibromyxoid tumors are rare soft-tissue neoplasms, usually with an indolent course. However, atypical/malignant variants have been described, showing either local recurrence after complete excision or metastasis to the lungs, mediastinum, adrenals, or soft tissue. We report the case of an ossifying fibromyxoid tumor of the left ankle that metastasized to the lung and thyroid gland 12 years after the initial diagnosis and surgical treatment. To our knowledge, this is the first reported case of this neoplasm metastasizing to the thyroid gland. [ABSTRACT FROM AUTHOR]

A dermoid cyst is an ectodermally differentiated form of teratoma. Its occurrence in the parotid gland is very rare. Such a presentation must be properly evaluated in order to rule out malignancy. We describe the diagnostic evaluation and surgical management of a parotid dermoid cyst in an 18-year-old man. We also review the embryologic pathogenesis of the tumor and the usefulness of the physical examination, preoperative fine-needle aspiration cytology, magnetic resonance imaging, and computed tomography in evaluating the extent of the tumor, its histologic features, and its cystic characteristics. Finally, we discuss the role of surgical management in terms of preserving facial nerve integrity and preventing recurrence. [ABSTRACT FROM AUTHOR]

A letter to the editor is presented about the classification of tumors.