Disseminated Juvenile Pilomyxoid Astrocytoma of the Hypothalamic-Chiasmatic Region
Abstract
Pilomyxoid astrocytoma (PMA) is a recently described histological type of pilocytic astrocytoma (PA), but the tumors show histological differences. PMA has more aggressive malignant behavior than PA. Magnetic Resonance Imaging (MRI) may play a crucial role in the preoperative setting and also help to establish an appropriate therapeutic regimen. In this case report, we illustrated MRI findings of a hypothalamic-chiasmatic PMA in a 15-year-old female patient presenting with extensive leptomeningeal seeding. The patient was operated for total tumor resection, but could not survive the second post-operative day. We have comprehensively discussed the clinical, imaging, and histopathological features of these relatively rare tumors and also reviewed the recent literature.
2- Burger PC, Cohen KJ, Rosenblum MK, Tihan T. Pathology of diencephalic astrocytomas. Pediatr Neurosurg 2000 ; 32 : 214-9.
3-Komotar RJ, Mocco J, Jones JE, Zacharia BE, Tihan T, Feldstein NA, Anderson RC. Pilomyxoid astrocytoma : diagnosis, prognosis and management. Neurosurg Focus 2005 ; 18 : E7.
4-Komotar RJ, Mocco J, Carson BS, Sughrue ME, Zacharia BE, Sisti AC, Canoll PD, Khandji AG, Tihan T, Burger PC, Bruce JN. Pilomyxoid astrocytoma : A review. Med Gen Med 2004 ; 6 : 42.
5-Tihan T, Burger PC. A variant of pilocytic astrocytoma : a possible distinct clinicopathological entity with a less favorable outcome. J Neuropathol Exp Neurol 1998 ; 57 : 500.
6-Komotar RJ, Burger PC, Carson BS, Brem H, Olivi A, Goldthwaite PT, Tihan T. Pilocytic and pilomyxoid hypothalamic-chiasmatic astrocytomas. Neurosurgery 2004 ; 54 : 72-9.
7-Arslanoglu A, Cirak B, Horska A, Okoh J, Tihan T, Aronson L, Avellino AM, Burger PC, Yousem DA. MR imaging characteristics of pilomyxoid astrocytomas. AJNR Am J Neuroradiol 2003 ; 24 : 1906-8.
8-Jacoby CG, Go RT, Beren RA. Cranial CT of neurofibromatosis. AJNR Am J Roentgenol 1980 ; 135 : 553-7.
9-Linscott LL, Osborn AG, Biaser S, Castillo M, Hewlett RH, Wieselthaler N, Chin SS, Krakenes S, Hedlund GL, Sutton CL. Pilomyxoid astrocytoma : expanding the imaging spectrum. AJNR Am J Neuroradiol 2008 ; 29 : 1861-6.
10-Perilongo G, Carollo C, Salviati L, Murgia A, Pillon M, Basso G, Gardiman M, Laverda A. Diencephalic syndrome and disseminated juvenile pilocytic astrocytomas of the hypothalamic-optic chiasm region. Cancer 1997 ; 80 : 142-6.
11-Khanani MF, Hawkins C, Shroff M, Dirks P, Capra M, Burger PC, Bouffet E. Pilomyxoid astrocytoma in a patient with neurofibromatosis. Pediatr Blood Cancer 2006 ; 46 : 377-80.
12-Shai R, Shi T, Kremen TJ, Horvath S, Liau LM, Cloughesy TF, Mischel PS, Nelson SF. Gene expression profiling identifies molecular subtypes of gliomas. Oncogene 2003 ; 22 : 4918-23.
Files | ||
Issue | Vol 57, No 9 (2019) | |
Section | Case Report(s) | |
DOI | https://doi.org/10.18502/acta.v57i9.2643 | |
Keywords | ||
Pilocytic astrocytoma Pilomyxoid astrocytoma Leptomeningeal Dissemination |
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