Bladder cancer metastases to the temporal bone.
Bladder cancer metastases to the temporal bone.
复制标题
膀胱癌转移至颞骨。
DOI：
10.1097/mao.0b013e31821a80e2
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Paparella,MichaelM
中科院分区：
文献类型：
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作者：
Yildirim-Baylan,Muzeyyen;Erdogmus,Nagehan;Cureoglu,Sebahattin;Paparella,MichaelM
讨论一般来说，肿瘤从原发部位扩散到颞骨有5种途径：1）血源性扩散，2）直接脑膜，3）从颅内原发性肿瘤直接延伸，4）软脑膜延伸，5）白血病或淋巴瘤浸润（3）。通常的传播途径是血行性。颞骨最常见的转移部位是岩尖，其次是乳突和内耳道（2）。在本病例中，肿瘤通过直接脑膜和/或血行扩散浸润内耳道和岩尖。Gloria-Cruz等人(2)最常见的耳科症状是听力损失。然而，颞骨转移通常是无症状的。该患者无任何耳科症状。即使膀胱癌患者没有耳科或前庭症状，耳科医生仍然应该记住转移到颞骨。鸣谢：作者感谢卡罗琳萨瑟兰和莫妮卡Schachern的技术援助。
DISCUSSIONIn general, 5 routes have been considered for tumor spread from primary sites to the temporal bone: 1) hematogenous spread, 2) direct meningeal, 3) direct extension from an intracranial primary tumor, 4) leptomeningeal extension, and 5) leukemic or lymphomatous infiltration (3). The usual route of dissemination is hematogenous. The most common site of metastasis in temporal bones is the petrous apex, followed by the mastoid and the internal auditory canal (2). In the presented case, tumors infiltrated the internal auditory canal and petrous apex either by direct meningeal and/or hematogenous spread. Gloria-Cruz et al.(2) reported that the most common otologic symptom is hearing loss. However, temporal bone metastases often are asymptomatic. This patient did not have any otologic symptoms. Even if a patient with bladder cancer has no otologic or vestibular symptoms, an otologist should still keep in mind metastasis to the temporal bone.Acknowledgments: The authors thank Carolyn Sutherland and Monika Schachern for technical assistance.