Medulloblastoma with Extensive Nodularity Undergoing Post-Therapeutic Maturation to a Gangliocytoma: A Case Report and Literature ReviewChelliah D. · Mensah Sarfo-Poku C. · Stea B.D. · Gardetto J. · Zumwalt J.
aSchool of Medicine and bSchool of Public Health, Loma Linda University, Loma Linda, Calif., and Departments of cRadiation Oncology and dPathology, University of Arizona, Tuscon, Ariz., USA
We present a report of a 12-year-old boy diagnosed with medulloblastoma at 22 months of age. A gross total resection was performed followed by adjuvant systemic chemotherapy due to his young age; however, the tumor recurred locally in the posterior fossa 7 months later. The recurrent tumor was excised and he received craniospinal radiation with a boost given to the posterior fossa followed by high-dose chemotherapy. He remained disease free for approximately 10 years without major neurologic deficit and only mild cognitive impairment. A routine follow-up MRI of the brain revealed an enhancing mass. The patient underwent surgical debulking and pathological examination revealed no residual immature medulloblastoma cells but instead mature ganglion cells, consistent with a gangliocytoma. The apparent maturation of primitive medulloblastoma cells is a rare phenomenon, which may have ensued from the long-term effects of adjuvant therapies inducing advanced cellular maturation.
Daniel Chelliah, MD
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Received: September 27, 2010
Accepted after revision: November 6, 2010
Published online: March 9, 2011
Number of Print Pages : 4
Number of Figures : 3, Number of Tables : 0, Number of References : 24
Vol. 46, No. 5, Year 2010 (Cover Date: April 2011)
Journal Editor: Frim D.M. (Chicago, Ill.)
ISSN: 1016-2291 (Print), eISSN: 1423-0305 (Online)
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