Osteochondroma of the Skull Base

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

“…9,15) Pain or discomfort can occur due to disturbance of the surrounding sensory nerves and connective tissue. 26) The symptoms of osteochondroma generally show gradual onset, but our patient suffered sudden onset of severe headache and loss of vision that might have been due to intratumoral hemorrhage. Osteochondroma with intracranial hemorrhage is rare, 9,33) and the present case of sellar turcica osteochondroma with acute intratumoral hemorrhage mimicking pituitary apoplexy is unique.…”

“…Total surgical removal is considered to be the only effective treatment for osteochondroma, 3,[12][13][14][15]19,21,26) but the present tumor adhered tightly to the pituitary stalk, making total removal impossible. We found that partial removal relieved the compression of the optic chiasm and nerve.…”

“…[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.…”