OBJECTIVE AND IMPORTANCE: Teratomas represent 0.5% of all @entity5 . These @entity5 have tissue representative of the three germinal layers: ectoderm, mesoderm, and endoderm. Most @entity44 are midline @entity5 located predominantly in the sellar and pineal regions. Cavernous sinus location is very rare; only two purely intracavernous @entity44 have been reported. CLINICAL PRESENTATION: A 14-year-old @entity1 presented with a history of progressive @entity227 , @entity10 , and a @entity9 -like @entity158 in the right V1 distribution. A head computed tomographic scan and magnetic resonance imaging disclosed a large @entity5 filling the right cavernous sinus and extending into the ipsilateral middle fossa. These scans also demonstrated mixed signals derived from different tissues conforming to the @entity5 (fat, cartilage, muscle strands, bone, and a primordial tooth). Heterogeneous enhancement was seen after infusion of contrast medium. Significant @entity79 and remodeling was evident in the middle fossa floor and right orbit, with secondary proptosis. A presumptive diagnosis of mature @entity44 was made. INTERVENTION: With the use of a right frontotemporal interfascial approach, a combined extra- and intradural dissection of the @entity5 was performed. The lesion entirely occupied the cavernous sinus, laterally displacing the Gasserian ganglion and trigeminal branches (predominantly @entity15880 ). The internal carotid artery and Cranial Nerve VI were medially displaced by the @entity5 mass. The lesion was composed of different tissues, including hair, fat, cartilage, muscle, nerve-like tissue, bone, and a primordial tooth. The @entity5 was removed completely, and the pathological report confirmed the diagnosis of a mature @entity44 . There was no evidence of recurrence at the 8-month follow-up examination. CONCLUSION: Because of the lesion's location in the lateral wall of the cavernous sinus, a total removal was achieved with the use of standard microsurgical techniques. Knowledge of the microanatomy is essential in treating intracavernous pathology. We present the third reported case of a giant mature @entity44 of the cavernous sinus.

Giant cavernous sinus XXXX : a clinical example of a rare entity: case report.

@entity1 :: ('9606', 'Species') :: ['boy'] @entity227 :: ('MESH:D014786', 'Disease') :: ['right eye proptosis and visual acuity impairment'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor', 'intracranial tumors', 'benign tumors', 'tumors'] @entity79 :: ('MESH:D001847', 'Disease') :: ['bone erosion'] @entity158 :: ('MESH:D010146', 'Disease') :: ['facial pain'] @entity10 :: ('MESH:D006261', 'Disease') :: ['headaches'] @entity9 :: ('MESH:D009437', 'Disease') :: ['neuralgia'] @entity44 :: ('MESH:D013724', 'Disease') :: ['teratoma', 'teratomas'] @entity15880 :: ('28299;6983', 'Gene') :: ['V1 and V2']
@entity44 :: (MESH:D013724,Disease) :: ['teratoma']
