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The data indicate that 5-ALA is a promising marker for intraoperative visualization of anaplastic foci in diffusely infiltrating gliomas with nonsignificant contrast enhancement. Unaffected by intraoperative brain shift, 5-ALA may increase the precision of tissue sampling during tumor resection for histopathological grading, and therefore optimize allocation of patients to adjuvant treatments.
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Widhalm et al. (2010) studied this question.
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