Pediatric papillary thyroid cancer \u3e1 cm: is total thyroidectomy necessary?

PURPOSE: Treatment of pediatric papillary thyroid cancer (p-PTC) often follows adult guidelines, including total thyroidectomy for tumors \u3e1cm. This study examined the association between operation type and overall survival (OS) for tumors \u3e1cm in size in the pediatric population. METHODS: Patients ≤ 21 years of age with primary papillary thyroid cancer \u3e1cm were reviewed from the National Cancer Data Base (NCDB) from 1998 to 2011. Kaplan-Meier analysis followed by Cox proportional hazard models estimated the impact of total thyroidectomy (TT) vs. partial thyroidectomy (PT) on overall survival. Models were adjusted for patient, tumor, and treatment factors. RESULTS: 3,861 cases (3474 TT, 387 PT) were included. Estimated 15-year overall survival was 96.10% after TT and 96.18% after PT (p=0.0855). In multivariate analysis of 3173 patients, only lowest socioeconomic level (HR 4.93, p=0.001) and unfavorable histology (HR 6.11, p=0.016) were associated with worse OS. Survival for patients undergoing TT was not statistically improved over those undergoing PT (HR 0.81, p=0.694). CONCLUSION: p-PTC \u3e1cm has an excellent 15-year overall survival. Treatment with TT did not have an improved OS compared to PT. Lower socioeconomic status and unfavorable histology were associated with decreased OS

Breast Malignancies in Children: Presentation, Management, and Survival.

PURPOSE: Pediatric breast malignancies are rare, and descriptions in the literature are limited. The purpose of our study was to compare pediatric and adult breast malignancy. METHODS: We performed a retrospective cohort study using the National Cancer Data Base comparing patients ≤21 years to those \u3e21 years at diagnosis (1998-2012). Generalized linear models estimated differences in demographic, tumor, and treatment characteristics. Cox regression was used to compare overall survival. RESULTS: Of 1,999,181 cases of invasive breast malignancies, 477 (0.02%) occurred in patients ≤21 years. Ninety-nine percent of adult patients had invasive carcinoma compared with 64.8% of pediatric patients with the remaining patients having sarcoma, malignant phyllodes, or malignancy not otherwise specified (p \u3c 0.001). Pediatric patients were twice as likely to have an undifferentiated malignancy [relative risk (RR) 2.19; 95% confidence interval (CI) 1.72-3.79]. Half of adults presented with Stage I disease compared with only 22.7% of pediatric patients (p \u3c 0.001). Pediatric patients were 40% more likely to have positive axillary nodes (RR 1.42; 95% CI 1.10-1.84). Among patients with invasive carcinoma, pediatric patients were more than four times as likely to receive a bilateral than a unilateral mastectomy compared with adults (RR 4.56; 95% CI 3.19-6.53). There was no difference in overall survival between children and adults. CONCLUSIONS: Pediatric breast malignancies are more advanced at presentation, and there is variability in treatment practices. Adult and pediatric patients with invasive carcinoma have similar overall survival

The association between nephroblastoma-specific outcomes and high versus low volume treatment centers.

BACKGROUND: Though the volume-outcome relationship has been well-established in adults, low mortality rates and small sample sizes have precluded definitive demonstration in children. This study compares treatment-specific factors for children with nephroblastoma at high (HVC) versus low volume centers (LVC). METHODS: We performed a retrospective cohort study comparing patients ≤18years with unilateral nephroblastoma treated at HVCs and LVCs using the National Cancer Data Base (1998-2012). Definitions of HVCs included performing above the median, the upper two quartiles, and the highest decile of nephroblastoma resections. Outcomes included nodal sampling, margin status, time to chemotherapy and radiation, and survival. Statistical analyses included χ RESULTS: Of 2911 patients from 210 centers, 1443 (49.6%) were treated at HVCs. There was no difference in frequency of preoperative biopsy or days to radiation (p\u3e0.05). High volume centers were more likely to perform nodal sampling (RR 1.04, 95%CI 1.01-1.08) and had fewer days to chemotherapy (RR 0.80, 95%CI 0.69-0.93). Five-year survival was similar (HVC: 0.93, 95%CI 0.92-0.94; LVC: 0.93, 95%CI 0.91-0.94). CONCLUSIONS: HVCs were more likely to perform nodal sampling and had fewer days to chemotherapy. There was no difference in days to radiation or survival between centers. LEVEL OF EVIDENCE: Level II (retrospective prognosis study)

Colorectal carcinoma in pediatric patients: A comparison with adult tumors, treatment and outcomes from the National Cancer Database.

BACKGROUND: Pediatric colorectal cancer (CRC) is rare. Comparison with adult CRC tumors, management, and outcomes may identify opportunities for improvement in pediatric CRC care. STUDY DESIGN: CRC patients in the National Cancer Data Base from 1998 to 2011, were grouped into Pediatric (≤21years), early onset adult (22-50) and older adult (\u3e50) patients. Groups were compared with χ(2) and survival analysis. RESULTS: A total of 918 pediatric (Ped), 157,779 early onset adult (EA), and 1,304,085 older adults (OA) were identified (p CONCLUSIONS: This is the largest cohort of pediatric CRC patients, revealing more aggressive tumor histology and behavior in children, particularly in rectal cancer. Despite standard oncologic treatment, age ≤21 was a significant predictor of mortality. This is likely owing to worse tumor biology rather than treatment disparities and may signal the need for different therapeutic strategies

Pediatric gastric adenocarcinoma: A National Cancer Data Base review.

PURPOSE: We sought to compare the presentation, management, and outcomes in gastric adenocarcinoma cancer for pediatric and adult patients. METHODS: Using the 2004 to 2014 National Cancer Database (NCDB), patients ≤21 years (pediatric) were retrospectively compared to \u3e21 years (adult). Chi-squared tests were used to compare categorical variables, and Cox regression was used to estimate hazard ratios (HR) for survival differences. RESULTS: Of the 129,024 gastric adenocarcinoma cases identified, 129 (0.10%) occurred in pediatric patients. Pediatric cases presented with more advanced disease, including poorly differentiated tumors (81% vs 65%, p = 0.006) and stage 4 disease (56% vs 41%, p = 0.002). Signet ring adenocarcinoma comprised 45% of cases in the pediatric group as compared to 20% of cases in the adults (P \u3c 0.001). Similar proportions in both groups underwent surgery. However, near-total gastrectomy was more common in the pediatric group (16% vs 6%, p \u3c 0.001). The proportions of patients with negative margins, nodal examination, and presence of positive nodes were similar. There was no overall survival difference between the two age groups (HR 0.92, 95% Confidence interval 0.73-1.15). CONCLUSION: While gastric adenocarcinoma in pediatric patients present with a more advanced stage and poorly differentiated tumors compared to adults, survival appears to be comparable. TYPE OF STUDY: Retrospective cohort study. LEVEL OF EVIDENCE: III

Effects of socioeconomic status on children with well-differentiated thyroid cancer.

BACKGROUND: Well-differentiated thyroid cancer is the most common endocrine malignancy in children. Adult literature has demonstrated socioeconomic disparities in patients undergoing thyroidectomy, but the effects of socioeconomic status on the management of pediatric well-differentiated thyroid cancer remains poorly understood. METHODS: Patients ≤21 years of age with well-differentiated thyroid cancer remains were reviewed from the National Cancer Data Base. Three socioeconomic surrogate variables were identified: insurance type, median income, and educational quartile. Tumor characteristics, diagnostic intervals, and clinical outcomes were compared within each socioeconomic surrogate variable. RESULTS: A total of 9,585 children with well-differentiated thyroid cancer remains were reviewed. In multivariate analysis, lower income, lower educational quartile, and insurance status were associated with higher stage at diagnosis. Furthermore, lower income quartile was associated with a longer time from diagnosis to treatment (P \u3c .002). Similarly, uninsured children had a longer time from diagnosis to treatment (28 days) compared with those with government (19 days) or private (18 days) insurance (P \u3c .001). Despite being diagnosed at a higher stage and having a longer time interval between diagnosis and treatment, there was no significant difference in either overall survival or rates of unplanned readmissions based on any of the socioeconomic surrogate variables. CONCLUSION: Children from lower income families and those lacking insurance experienced a longer period from diagnosis to treatment of their well-differentiated thyroid cancer remains. These patients also presented with higher stage disease. These data suggest a delay in care for children from low-income families. Although these findings did not translate into worse outcomes for well-differentiated thyroid cancer remains, future efforts should focus on reducing these differences