Evaluation of prognostic factors for 5 year-survival after surgery for colorectal cancer
- PMID: 32180583
Evaluation of prognostic factors for 5 year-survival after surgery for colorectal cancer
Abstract
Aim: The aim of this study was to assess and analyze the prognostic factors for survival in patients undergoing curative surgery for colorectal cancer and to identify new prognostic factors.
Methods: The prospective study included 301 patients diagnosed with colorectal cancer, stages I-III, undergoing curative surgery. Demographic data, clinical and anamnestic data, laboratory exams, paraclinical examinations, morphological and pathological examination were recorded. The Petersen index was calculated. Tumor necrosis, desmoplasia and mucinous component were assessed. Local inflammatory response was calculated using Klintrup criteria. Patients were followed for five years after surgery.
Results: There were 197 patients (66.4%) who survived and 104 patients (34.6%) who died during the 5-year follow- up period. Multivariate analysis showed that death was mostly associated with patients over 60 years of age (p=0.05). Tumor location within the colon was associated with a better survival than tumor location within the rectum (HR - 0.57; p=0.02). Patients with T>2 had a poor prognosis compared to those with T=<2 (HR - 2.23; p=0.02). Patients with Klintrup score >1 had a better prognosis (HR - 0.20; p <0.001). Patients with venous invasion showed significantly worse prognosis (HR - 2.26; p=0.003). Patients with desmoplasia score 3 had lower death rates than those with score 1 (HR - 0.42; p=0.01).
Conclusion: Survival was superior in patients with cancer of the colon. The following parameters had a strong independent prognostic factor for survival: age, stage T>2, venous invasion, mucinous component and desmoplasia.
Key words: Colorectal cancer, Prognostic factors, Survival.
Scopo finalizzato all’analisi e valutazione dei fattori prognostici per la sopravvivenza in pazienti sottoposti a chirurgia curativa per cancro del colon-retto e per identificare nuovi fattori prognostici. Si tratta di uno studio prospettico comprendente 301 pazienti con diagnosi di cancro del colon-retto, stadio IIII, sottoposti a chirurgia curativa e seguiti per cinque anni dopo l’intervento chirurgico. Sono stati registrati dati demografici, dati clinici e anamnestici, esami di laboratorio, esami paraclinici, esame morfologico e patologico, ed è stato calcolato l’indice di Petersen. Sono stati presi in considerazione necrosi tumorale, desmoplasia e componente mucinosa sull’istologia. La risposta infiammatoria locale è stata calcolata usando i criteri di Klintrup. Al follow-up di 5 anni i pazienti sopravvissuti sono stati 197 pazienti (66,4%) e quelli deceduti 104 pazienti (34,6%). L’analisi multivariata ha mostrato che la morte è risultata associata principalmente a pazienti di età superiore a 60 anni (p = 0,05). La sopravvivenza è risultata migliore in caso di posizione del tumore all’interno del colon rispetto alla localizzazione del tumore all’interno del retto (HR - 0,57; p = 0,02). I pazienti con T> 2 hanno avuto una prognosi sfavorevole rispetto a quelli con T = <2 (HR - 2,23; p = 0,02). I pazienti con punteggio Klintrup> 1 hanno presentato una prognosi migliore (HR - 0.20; p <0.001); quelli con invasione venosa hanno mostrato prognosi significativamente peggiore (HR - 2,26; p = 0,003), e quelli con punteggio di desmoplasia 3 hanno avuto tassi di mortalità inferiori rispetto a quelli con punteggio 1 (HR - 0,42; p = 0,01). In conclusione la sopravvivenza è risultata superiore nei pazienti con cancro del colon rispetto a quelli con cancro del retto. I seguenti parametri avevano un forte fattore prognostico indipendente per la sopravvivenza: età, stadio T> 2, invasione venosa, componente mucinosa e desmoplasia.
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