Suprasellar Osteochondroma with Chiasmal Syndrome

Osteochondroma of the Sella Turcica Presenting With Intratumoral Hemorrhage -Case Report-

“…Osteochondroma tumor masses grow more slowly than other suprasellar tumors such as chondrosarcoma, metastatic tumors, meningioma, craniopharyngioma, or chordoma 21,33) and usually do not show clinical symptoms until they become large enough to induce mass effects. [2][3][4][28][29][30][31]33) Osteochondromas can cause symptomatic complications via mechanical irritation of the cranial nerves, soft tissue compression, vascular injury, and fracture. 17) The specific symptomatology depends on tumor localization, and the range of symptoms is wide.…”

“…Sellar turcica osteochondroma is related to optic chiasmal syndrome, which is characterized by irregular bitemporal hemianopsia, inferior quadrantanopsia, and decreased visual acuity. 28) Parasellar and clival osteochondromas are associated with pareses of the third, fourth, fifth, and sixth cranial nerves, and increased tumor volumes can possibly lead to lower cranial nerve pareses, cerebellar ataxia, or pyramidal tract signs. 9,15) Pain or discomfort can occur due to disturbance of the surrounding sensory nerves and connective tissue.…”

“…[2][3][4][28][29][30][31]33) Osteochondroma can occur as a solitary lesion, or as part of Ollier disease (multiple polysystemic enchondromatosis) or Maffuci's syndrome (multiple enchondromatosis associated with soft tissue angiomas). 4,22) Intracranial osteochondroma is a benign tumor considered to originate from the residual primordial cartilaginous cranium that replaces the spheno-petrosal, spheno-occipital, or petro-occipital synchondrosis during development, [2][3][4]14,15,20,22,26,28,30) and occurs as a cartilage-capped bony protrusion on the external surface bones. 7,11,16,19) Radiography shows intracranial osteochondroma as a welldemarcated, lobulated, dense mass that continues to the underlying bone.…”

“…[1][2][3][4][28][29][30][31]33) Intracranial osteochondromas are rare, accounting for less than 1% of all intracranial space-occupying lesions, 4,12) and can arise from the skull base, convexity, and other intracranial regions. [2][3][4]6,[12][13][14][15][19][20][21][22]25,26,[28][29][30][31] The vast majority of intracranial osteochondromas occur at the base of the skull and can be categorized into three groups: sellar turcica osteochondroma, parasellar osteochondroma, and clival osteochondroma. [2][3][4]14,15,20,22,26,28,30) Here we describe an unusual case of sellar turcica osteochondroma mimicking hemorrhagic pituitary adenoma.…”

“…[2][3][4]6,[12][13][14][15][19][20][21][22]25,26,[28][29][30][31] The vast majority of intracranial osteochondromas occur at the base of the skull and can be categorized into three groups: sellar turcica osteochondroma, parasellar osteochondroma, and clival osteochondroma. [2][3][4]14,15,20,22,26,28,30) Here we describe an unusual case of sellar turcica osteochondroma mimicking hemorrhagic pituitary adenoma.…”