Rare giant asymptomatic skull metastasis from intrahepatic cholangiocarcinoma

To the Editor: Skull metastases are common cranial tumors in adults. Breast cancer, lung cancer, prostate cancer and malignant lymphoma are the most common types of primary tumor. Skull metastases are often asymptomatic; however, they can also cause local pain and cranial nerve palsies, and even severe disability due to compression of the dural sinuses [1] . In these cases, surgery is necessary to improve the patients’ quality of life, especially relieving the mass effect of skull metastasis. Skull metastases from less common ma-