The Cerebrospinal Epidermoids (Cholesteatomata)

Epidermoid tumor arising in the anterior interhemispheric fissure

“…Intracranial epidermoid tumors originate from epithelial inclusions isolated during the third or fourth week of embryonic development. 3,4,7,11,12 Epidermoid tumors in the callosal region arise from epithelial implantation in the longitudinal cerebral fissure during its formation through expansion and approximation of the forebrain vesicles. 4,7 There have only been 18 cases reported in the literature of an epidermoid tumor arising in the interhemispheric fissure.…”

“…4,7 There have only been 18 cases reported in the literature of an epidermoid tumor arising in the interhemispheric fissure. [1][2][3][4][5][6][7][8][9][10][11][12] The first report was by Critchley and Ferguson, who described a patient with a huge epidermoid tumor located at the anterior aspect of the corpus callosum. More recently the radiological features of these tumors have been reported.…”

“…There have only been 18 cases reported in the literature of an epidermoid tumor arising in the interhemispheric fissure. [1][2][3][4][5][6][7][8][9][10][11][12] We report an additional case and review the literature.…”

Ear Cholesteatoma versus Cholesterol Granuloma

“…5 Almost two centuries earlier, the anatomist Guichard Joseph Du Verney 6 used the term "steatome" to indicate the presence of cholesteatomatous substances in and around the base of the skull. Cushing 7 used the term "epidermal cholesteatoma," whereas Critchley and Ferguson, 8 who found the growth in the brain and spinal cord, proposed "epidermoid" because it was more suitable to convey its epithelial character.…”

Intracranial Epidermoids Occurring Simultaneously Below and Above the Tentorium

“…COMMENT The first report of a case of intracranial epidermoid is cited as being published by Dumerilu in 1807. Excellent historical surveys with recapitulations of the various terms which have been applied to these tumors are to be found in articles by Critchley and Ferguson, 12 Mahoney 13 and King.14 In 1936 Mahoney 13 reviewed the literature and collected 142 cases of epidermoid, including the intracranial, diploic and spinal varieties. According to his figures the distribution of the neo¬ plasm in these three situations, in the order named, is 16: 3 : 1.…”