Related Experiment Video
Updated: Jun 14, 2026
Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery
Published on: July 5, 2021
Craniopharyngioma Clinical Status Scale: a standardized metric of preoperative function and posttreatment outcome
Robert E Elliott1, Stephen A Sands, Russell G Strom
1Department of Neurosurgery, New York University School of Medicine, New York, NY, USA.
Insights
A new Craniopharyngioma Clinical Status Scale (CCSS) effectively predicts treatment outcomes in pediatric patients. Preoperative CCSS scores offer better prediction than clinical factors, aiding in treatment comparisons.
Area of Science:
- Pediatric neurosurgery
- Oncology
- Clinical outcomes research
Background:
- Optimal treatment for pediatric craniopharyngiomas remains debated.
- Current outcome metrics lack comprehensive assessment of multisystem dysfunction.
Purpose of the Study:
- To develop and validate a novel classification system for assessing craniopharyngioma treatment outcomes in children.
- To establish a standardized metric for comparing treatment modalities.
Main Methods:
- Retrospective analysis of 80 pediatric craniopharyngioma patients treated with attempted radical resection.
- Development of the Craniopharyngioma Clinical Status Scale (CCSS) assessing neurological, visual, pituitary, hypothalamic, and educational/occupational status.
- Comparison of CCSS predictive accuracy against clinical and imaging characteristics.
Main Results:
- Significant increase in pituitary dysfunction and improvement in vision post-treatment.
- Preoperative CCSS scores demonstrated superior prediction of postoperative outcomes compared to traditional clinical factors.
- Cognitive and neurological status showed less dramatic changes.
Conclusions:
- The Craniopharyngioma Clinical Status Scale (CCSS) is a valuable tool for predicting outcomes in pediatric craniopharyngioma patients.
- CCSS facilitates outcome comparison across different treatment strategies in the absence of randomized trials.
- Long-term follow-up is essential due to delayed sequelae and high recurrence rates.
Object:
Controversy persists concerning the optimal treatment of craniopharyngiomas in children, and no standard outcome metric exists for comparison across treatment modalities, nor is there one that adequately reflects the multisystem dysfunction that may arise.
Methods:
The authors retrospectively analyzed the records of 86 consecutive children who underwent a uniform treatment paradigm of attempted radical resection performed by a single surgeon. Excluding 3 perioperative deaths and 3 patients with inadequate follow-up, 80 children (34 girls and 46 boys; mean age 9.56 years; mean follow-up 9.6 years) composed the study group (53 primary and 27 previously treated/recurrent tumors). Building on existing classification schemes proposed by De Vile for hypothalamic dysfunction and Wen for overall functional outcome, the authors devised a more nuanced classification system (Craniopharyngioma Clinical Status Scale [CCSS]) that assesses outcome across 5 axes, including neurological examination, visual status, pituitary function, hypothalamic dysfunction, and educational/occupational status at last follow-up (there is a 4-tiered grading scale in each domain, with increasing values reflecting greater dysfunction).
Results:
There was a significant increase in pituitary dysfunction following treatment-consistent with the high rates of diabetes insipidus and hypopituitarism common to the surgical management of craniopharyngiomas-and less dramatic deterioration in hypothalamic function or cognitive domains. Significant improvement in vision was also demonstrated, with no significant overall change in neurological status. Preoperative CCSS scores predicted postoperative outcome better than clinical characteristics like patient age, sex, tumor size, and the location or presence of hydrocephalus.
Conclusions:
Preoperative CCSS scores predicted outcome with higher accuracy than clinical or imaging characteristics. In lieu of randomized trials, the CCSS may provide a useful outcome assessment tool for comparison across treatment paradigms and surgical approaches. Long-term follow-up is critical to the analysis of outcomes of craniopharyngioma treatment, given the often-delayed sequelae of all therapies and the high recurrence rates of these tumors.
