https://www.selleckchem.com/pr....oducts/2-Methoxyestr
Benign tumors of the anterior cranial base may originate from intracranial, cranial, or extracranial sites. Intracranial tumors such as meningiomas may secondarily involve the cranial base and extend into the sinuses or nasal cavity. Bony tumors arising from the cranium include benign fibro-osseous lesions such as osteoma, fibrous dysplasia, and ossifying fibroma. The most common extracranial tumors that may extend to the skull base include angiofibroma and inverted papilloma. Symptoms are nonspecific and diagnosis is o
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