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J. A. Epstein January 1945 2 1 49 71 10.3171/jns.1945.2.1.0049 Radiographic Visualization of an Intracerebral Dermoid Cyst Captain Sidney W. Gross January 1945 2 1 72 75 10.3171/jns.1945.2.1.0072 J Neurosurg Journal of Neurosurgery 0022-3085 Journal of Neurosurgery Publishing Group 1 1 1945 January 1945 2 1 10.3171/jns.1945.2.issue-1

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Franc D. Ingraham and Orville T. Bailey

excluded, as have chordomas. We have included the dermoid cysts, however, because they present neurosurgical problems similar to those of the cystic teratomas and because it is our belief that they belong histologically and developmentally to the same group as the tumors containing more varied organoid elements. The 15 teratomas and teratoid tumors were found among 231 neoplasms of the central nervous system operated upon at The Children's Hospital (6.5 per cent). Eight of the tumors were intracranial (4.1 per cent of all intracranial tumors at this hospital) and seven

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Eugene E. Cliffton and John R. Rydell

particular sinuses differ from the ordinary pilonidal sinus are that they usually have only one sinus opening and in several cases dermoid cysts have been present. In all cases reported there has been associated spina bifida. Neurological signs, in most instances of a serious nature, have been present in all reported cases, but these have usually been due to the complications of the sinus, such as meningitis, tumor (dermoid) or abscess. The complications that may arise from communication between the dura and skin are numerous and serious. These range from escape of

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Gilbert Horrax and J. P. Wyatt

the polydipsia and polyuria. The case is somewhat similar to Case 3 of Dorothy Russell—a patient with diabetes insipidus who was operated upon by Hugh Cairns with partial removal of a large suprasellar tumor. The latter was microscopically an ectopic pinealoma, and at necropsy the tumor was shown to have invaded the third ventricle. The pineal body, however, contained only a small dermoid cyst and was otherwise normal except near its posterior end where there were “some ill-defined groups of cells similar to those forming the infundibular tumor.” An extremely

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Howard A. Brown

epithelial cells produce tiny seed-like keratin pearls. Around many of the vessels adjacent to the lining of the cyst cavity are lymphocytes. None of the hair is seen in the microscopic section. It apparently has fallen out during the technical processes of the tissue. “Diagnosis: (a) Dermoid cyst. (b) Brain showing contusion, hemorrhagic and reactive gliosis.” Subsequent Course His progress was satisfactory for about 10 months, following which he again began to have recurring headaches. Shortly before his return for further examination in December 1942, he had a

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Ernest Sachs Jr. and Gilbert Horrax

. Obstet. , 1920 , 31 : 390 – 401 . Bailey , P. Cruveilhier's “tumeurs perlees.” Surg. Gynec. Obstet. , 1920, 31: 390–401. 4. Boldrey , E. B. , and Elvidge , A. R. Dermoid cysts of the vertebral canal. Ann. Surg. , 1939 , 110 : 273 – 284 . Boldrey , E. B., and Elvidge , A. R. Dermoid cysts of the vertebral canal. Ann. Surg. , 1939, 110: 273–284. 5. Bostroem , E. Ueber die pialen Epidermoide, Dermoide und Lipome und duralen Dermoide. Zbl. allg. Path. path. Anat. , 1897 , 8 : 1

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Samuel P. W. Black and William J. German

, 8 : 524 – 534 . Bailey , P. Further observations on pearly tumors. Arch. Surg., Chicago , 1924, 8: 524–534. 3. Boldrey , E. B. , and Elvidge , A. R. Dermoid cysts of the vertebral canal. Ann. Surg. , 1939 , 110 : 273 – 284 . Boldrey , E. B., and Elvidge , A. R. Dermoid cysts of the vertebral canal. Ann. Surg. , 1939, 110: 273–284. 4. Bostroem , E. Ueber die pialen Epidermoide, Dermoide und Lipome und duralen Dermoide. Zbl. allg. Path. path. Anat. , 1897 , 8 : 1 – 98

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Paul F. A. Hoefer and Sidney M. Cohen

.................. 2 Paget's disease......................................... 1 Osteoid osteoma....................................... 1 Sarcoma.............................................. 3 Multiple melanomata................................... 1 Metastatic carcinoma................................... 7 Dermoid cyst.......................................... 2 Myelomalacia.......................................... 2 Intramedullary tumor................................... 9 Intramedullary angioma

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William H. Mosberg Jr.

tumors found at operation within the vertebral canal with observations on their incidence. J. Neurosurg. , 1950, 7: 49–61. 9. Boldrey , E. B. , and Elvidge , A. R. Dermoid cysts of the vertebral canal. Ann. Surg. , 1939 , 110 : 273 – 284 . Boldrey , E. B., and Elvidge , A. R. Dermoid cysts of the vertebral canal. Ann. Surg. , 1939, 110: 273–284. 10. Bruns , L. , Cramer , A. , and Ziehen , Th. Handbuch der Nervenkrankheiten im Kindesalter. Berlin : S. Karger , 1912 , 980 pp. (see