residual_tumor

Residual tumor

The only study that compared this estimation with the presence of residual tumor mass on an MR image, dates back to 1994 1).

It may be difficult to differentiate between surgically induced enhancement and residual tumor.

Intraoperative dynamic contrast enhanced MRI provides quick, reproducible, high-quality, and simply interpreted dynamic MR images in the intraoperative setting and can aid in differentiating surgically induced enhancement from residual tumor 2).

The tumor status following treatment is described by the residual tumor (R) classification: R0, no residual tumor; R1, microscopic residual tumor; R2, macroscopic residual tumor. A residual tumor may be found in the area of the primary tumor and its regional lymph nodes and/or at distant sites. The R classification reflects the effects of treatment and influences further treatment planning. Furthermore, the R classification is a strong predictor of prognosis. An acceptable long-term prognosis can be expected only in R0 patients. Although there exist clear correlations between stage and R classification the differences in prognosis of R0 versus R1,2 cannot be explained by differences in stage alone.


1)
Albert FK, Forsting M, Sartor K, Adams HP, Kunze S (1994) Early postoperative magnetic resonance imaging after resection of malignant glioma: objective evaluation of residual tumor and its influence on regrowth and prognosis. Neurosurgery 34:45–60 discussion 60- 41
2)
Özduman K, Yıldız E, Dinçer A, Sav A, Pamir MN. Using intraoperative dynamic contrast-enhanced T1-weighted MRI to identify residual tumor in glioblastoma surgery. J Neurosurg. 2014 Jan;120(1):60-6. doi: 10.3171/2013.9.JNS121924. Epub 2013 Oct 18. PubMed PMID: 24138206.
  • residual_tumor.txt
  • Last modified: 2020/02/03 18:53
  • by administrador