Magnetic resonance imaging and computed tomography of an intraventricular craniopharyngioma

Sacher, Michael; Gottesman, Robin I.; Rothman, Arthur I.; Rosenblum, Bruce R.; Handler, Michael

doi:10.1016/0899-7071(90)90005-v

Cited by 6 publications

(3 citation statements)

References 5 publications

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“…6). which has been postulated to reflect either increased cho lesterol content or presence of methemoglobin [7][8][9]. Al though there are not enough reports in the MR literature to ascertain an accurate incidence of this finding, its pres ence in 64% of our craniopharyngiomas suggest that it is quite common.…”

Section: Discussionmentioning

confidence: 71%

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Magnetic Resonance Analysis of Suprasellar Tumors of Childhood

Kollias¹,

Barkovich

Edwards

1991

Pediatr Neurosurg

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A retrospective analysis of the magnetic resonance (MR) images in 53 pediatric patients with pathologically proven suprasellar tumors was performed, in an attempt to identify the characteristic MR features of these tumors and assess the capability of MR to predict a histologic differentiation. The tumors analyzed included 29 astrocytomas, 11 craniopharyngiomas, 4 germinomas, 3 pituitary adenomas with suprasellar extension, 2 teratomas, 1 spindle cell tumor, 1 primitive neuroectodermal tumor, 1 arachnoid cyst and 1 chordoma of the clivus with suprasellar extension. Thirty patients received intravenous Gd-DTPA as part of their MR exam. Certain MR features, while not pathognomon-ic, are quite helpful in the differentiation of craniopharyngiomas from chiasmatic/hypothalamic astrocytomas. Presence of a high signal intensity component on T1-weighted images, cyst formation with macrocystic predominance, irregular, heterogeneous solid portion, and smooth ring cyst wall enhancement represent the key characteristics of craniopharyngiomas. Solid predominance with microcysts, long T1 and T2 relaxation times, intense enhancement after contrast administration and extension along the posterior optic pathways are the typical MR findings of chiasmatic/hypothalamic astrocytomas. Presence of diabetes insipidus in correlation with the MR findings of a well-marginated, round or lobular tumor with prolonged T1 and T2 relaxation times, which enhances strongly after Gd-DTPA administration may be the clue in the diagnosis of suprasellar germinomas. Teratomas can be separated from other pediatric suprasellar neoplasms on the basis of internal heterogeneity with presence of fat, calcium and various soft tissue densities. Tumors invading the suprasellar cistern by extension are easily differentiated by identification of the primary site of origin. The above features, while not pathognomonic, are quite helpful in making a specific diagnosis.

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Section: Discussionmentioning

confidence: 71%

“…6) was a typical finding, correlating at sur gery with the presence of calcium. Tumoral calcification in craniopharyngiomas is reported to occur in 70-93% of cases [1,7,9. 12, 13, 16|.…”

Section: Discussionmentioning

confidence: 99%

Magnetic Resonance Analysis of Suprasellar Tumors of Childhood

Kollias¹,

Barkovich

Edwards

1991

Pediatr Neurosurg

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“…On CT and MR images a substantial number of craniopharyngiomas have a characteristic appearance, i. e., location in the suprasellar region and composition of solid and cystic portions with frequent calcification [1][2][3]. Although the findings of MR imaging in the diagnosis of craniopharyngiomas have been described, previous studies have included only a few cases in which MR imaging was performed after the administration of contrast media [1,[4][5][6][7][8]. In a retrospective review of CT and MR findings in 20 cases of craniopharyngioma, we sometimes observed atypical imaging features including unusually massive extension, spontaneous drainage of the cystic portion, and hemorrhage.…”

Section: Introductionmentioning

confidence: 99%

CT and MR imaging of craniopharyngioma

et al. 1997

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We reviewed imaging findings of CT and MR imaging in 20 cases of surgically confirmed craniopharyngioma in an attempt to determine their relation to patterns of tumor extent. The relationship between these patterns and the frequency of preoperative CT diagnosis and MR imaging diagnosis according to the surgical diagnosis were determined. The CT technique was superior to MR imaging in the detection of calcification. The MR imaging technique was superior to CT for determining tumor extent and provided valuable information about the relationships of the tumor to surrounding structures. Thus, CT and MR imaging have complementary roles in the diagnosis of craniopharyngiomas. In cases of possible craniopharyngioma, noncontrast sagittal T1-weighted images may enable the identification of the normal pituitary, possibly leading to the correct diagnosis.

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Intraventricular craniopharyngioma: morphological analysis and outcome evaluation of 17 cases

Pan

et al. 2011

Acta Neurochir

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Magnetic resonance imaging and computed tomography of an intraventricular craniopharyngioma

Cited by 6 publications

References 5 publications

Magnetic Resonance Analysis of Suprasellar Tumors of Childhood

Magnetic Resonance Analysis of Suprasellar Tumors of Childhood

CT and MR imaging of craniopharyngioma

Intraventricular craniopharyngioma: morphological analysis and outcome evaluation of 17 cases

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