Analysis of Tumor Volume Dynamics in Colorectal Cancer

2019 ◽  
Vol 7 (4) ◽  
pp. 81-87
Author(s):  
A. A. Filin ◽  
A. A. Sizov ◽  
E. E. Chupandina ◽  
V. I. Danilenko ◽  
D. Yu. Bugrimov ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Life Expectancy ◽  
Tumor Invasion ◽  
Tumor Volume ◽  
Clinical Stage ◽  
Age Groups ◽  
Tumor Localization ◽  
Regional Lymph Nodes ◽  
Degree Of Differentiation ◽  
Tumor Invasion Depth

The purposeof the study was to investigate the dynamics of tumor volume change in different age groups and its relation to the clinical (sex, age, stage of disease, life expectancy) and morphological parameters (tumor localization, metastases to regional lymph nodes, tumor invasion depth, histological type and degree of differentiation).Material and methods.The data of 527 patients (men and women, age from 24 to 86 years) suffering from colorectal cancer who underwent primary resection of the tumor. Clinical data and protocols of pathologist were analyzed: clinical stage of the disease, tumor localization, life expectancy, macroscopic, microscopic description, diagnosis. Based on the data obtained from the gross description, the tumor volume was calculated.Results. The maximum incidence of colorectal cancer was observed in patients in the age group from 70 to 79 years, more than 90% of all patients are over 50 years old. The volume of the tumor in colorectal cancer varied significantly, but the dynamics of the increase of the average volume with age was not observed. Opposite, the largest neoplasms were found in the youngest patients.Conclusion. Obtained data shows that changes in the tumor volume in colorectal cancer is nonlinear. Indicators of tumor volume in different age groups show similar dynamics: the most common tumors are mediumsized, but the small and very large tumors are much less common, which can explain the low rates of detection of tumors of this localization in the early stages.

scholarly journals Prevalence of prognostic factors for cancer of the uterine cervix after radical hysterectomy

2009 ◽  
Vol 127 (3) ◽  
pp. 145-149 ◽  
Author(s):  
Marília Buenos Aires Cabral Tavares ◽  
Rodrigo Beserra Sousa ◽  
Thiago Oliveira e Silva ◽  
Larissa Almeida Moreira ◽  
Loyana Teresa Teófilo Lima Silva ◽  
...  
Keyword(s):  
Lymph Node ◽  
Lymph Node Metastasis ◽  
Uterine Cervix ◽  
Tumor Invasion ◽  
Surgical Margin ◽  
Node Metastasis ◽  
Margin Involvement ◽  
Cuff Size ◽  
Degree Of Differentiation ◽  
Tumor Invasion Depth

CONTEXT AND OBJECTIVE: Cancer of the uterine cervix is still very common in Brazil. It is important to evaluate factors that influence its prognosis. The aim here was to analyze the prevalence of prognostic anatomoclinical factors among patients with carcinoma of the uterine cervix undergoing radical hysterectomy. DESIGN AND SETTING: Cross-sectional study on 301 patients with invasive carcinoma of the uterine cervix who underwent Level III Piver-Rutledge hysterectomy surgery at São Marcos Hospital. METHODS: The following variables were analyzed: age, histological type, degree of differentiation, invasion of lymphatic, vascular and perineural space, lymph node metastasis, distance to nearest margin, tumor invasion depth, vaginal cuff size, largest diameter of the tumor, presence of necrosis and surgical margin involvement. Descriptive statistics, multiple regression analysis, Kaplan-Meier survival curves and the log-rank test were performed. A significance level of 5% was used. RESULTS: The mean age was 48.27 years. The following were not important for the prognosis, in relation to survival analysis: degree of differentiation and tumor invasion depth; presence of lymphatic, blood and perineural invasions; distance to nearest margin; and vaginal cuff size. Tumor size (P < 0.036), presence of lymph node metastasis (P < 0.0004), necrosis (P < 0.05) and surgical margin involvement (P < 0.0015) presented impacts on survival. The overall survival with 98 months of follow-up was 88.35%. CONCLUSION: The most prevalent prognostic factors were the presence of lymph node metastasis, tumor size and surgical margin involvement.

Volume of Lymphatic Metastases Does Not Independently Influence Prognosis in Colorectal Cancer

2002 ◽  
Vol 20 (6) ◽  
pp. 1506-1511 ◽  
Author(s):  
Jan H. Wong ◽  
Susan Steinemann ◽  
Paul Tom ◽  
Shane Morita ◽  
Pamela Tauchi-Nishi
Keyword(s):  
Colorectal Cancer ◽  
Lymph Nodes ◽  
Metastatic Disease ◽  
Tumor Volume ◽  
Metastatic Tumor ◽  
Regional Lymph Nodes ◽  
Carcinoma Of The Colon ◽  
Ocular Micrometer ◽  
Metastatic Involvement ◽  
Colorectal Cancer Patients

PURPOSE: To evaluate the prognostic relevance of the volume of nodal metastatic disease in colorectal cancer patients. PATIENTS AND METHODS: One hundred node-positive patients with T2 or T3 carcinoma of the colon or rectum after routine histologic examination of the regional nodes were studied. The metastatic tumor was measured with an ocular micrometer, and the tumor volume was determined. RESULTS: The mean lymph node metastatic tumor volume was 5.1 ± 4.99 mm3 (range, 0.05 to 83,434 mm3). There was only a weak positive correlation with number of nodes involved with metastatic disease and tumor volume in nodes (r = .45). Median follow-up was 39 months (range, 1 to 87 months). The number of nodes was highly predictive of outcome. Individuals with one to three positive nodes had a substantially better survival than individuals with four or more positive nodes (P < .001). The volume of nodal metastatic disease correlated with outcome (P = .019). Patients dying as a result of disease had substantially greater mean metastatic nodal volume than those who were alive (3,705 v 1,783 mm3; P = .036). However, the total metastatic nodal volume did not, independent of positive nodes or number of positive nodes, predict outcome. Individuals with micrometastatic nodal volume did not have improved survival when compared with individuals with macrometastatic nodal volume (P = .79). CONCLUSION: The number of nodes involved with metastatic tumor, rather the volume of metastatic involvement of the regional lymph nodes, predicts outcome. These results suggest that micrometastatic disease may have a similar prognosis as macrometastatic disease when the same number of lymph nodes are involved with metastatic tumor.

scholarly journals Tumor suppressive effect of scavenger receptor class A member 5 overexpression in colorectal cancer by regulating PI3K/AKT/mTOR pathway

2021 ◽  
Author(s):  
Yi Li ◽  
Feng Peng ◽  
Xiangyun Tan ◽  
Jin Wang ◽  
Yeqing Xu
Keyword(s):  
Colorectal Cancer ◽  
Tumor Volume ◽  
Scavenger Receptor ◽  
Mtor Pathway ◽  
Ki67 Expression ◽  
Class A ◽  
Scavenger Receptor Class ◽  
Sw480 Cells ◽  
And Migration

Abstract Background Colorectal cancer (CRC) exhibits high risks of morbidity and mortality. Objective To investigate the effect of scavenger receptor class A member 5 (SCRAR5) on CRC and its mechanism on modulation of cancer development. Methods The SCRAR5 expression in four kinds of CRC cell lines (SW620, SW480, HT29, and HCT116) was measured by quantitative PCR and western blotting, respectively. The effects of SCRAR5 abnormal expression on cell proliferation, apoptosis, and migration were analyzed by CCK-8 assay, EdU assay, colony-forming assay, flow cytometry assay, Transwell assay and wound healing assay, respectively. Meanwhile, the involvements of PI3K/AKT/mTOR pathway with the role of SCRAR5 were investigated by western blotting. Afterwards, the in vivo effects of SCRAR5 abnormal expression on CRC xenograft mice were finally investigated by evaluating tumor volume, apoptosis and Ki67 expression. Results SCRAR5 was lowly expressed in CRC cell lines, especially SW480 cells. Up-regulation of SCRAR5 significantly promoted cell apoptosis, reduced cell proliferation and migration in SW480 cells. Notably, SCRAR5 overexpression obviously inhibited the phosphorylation levels of PI3K, AKT, and mTOR. Reversely, SCRAR5 silence exhibited promoting effects on HT29 cells. Consistently, in vivo experiments also revealed that SCRAR5 overexpression remarkably suppressed tumor volume and Ki67 expression, as well as promoted cell apoptosis. Conclusions Overall, up-regulating of SCRAR5 obviously inhibited CRC tumor growth in vitro and in vivo, which might be related to PI3K/AKT/mTOR pathway.

scholarly journals Could age increase the strength of inverse association between ultraviolet B exposure and colorectal cancer?

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Vidya Lakshmi Purushothaman ◽  
Raphael E. Cuomo ◽  
Cedric F. Garland ◽  
Timothy K. Mackey
Keyword(s):  
Colorectal Cancer ◽  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Age Groups ◽  
Incidence Rates ◽  
Ultraviolet B ◽  
Inverse Association ◽  
Crude Incidence ◽  
Age Dependent ◽  
Uvb Exposure

Abstract Background Vitamin D has been identified as a potential protective factor in the development of colorectal cancer (CRC). We expect to see a stronger association of ultraviolet B (UVB) exposure and CRC crude rates with increasing age since chronic vitamin D deficiency leads to sustained molecular changes that increase cancer risk. The DINOMIT (disjunction, initiation, natural selection, overgrowth, metastasis, involution, and transition) model postulates various stages of cancer development due to vitamin D deficiency and the associated latency period. The purpose of this study is to examine this age-dependent inverse relationship globally. Methods In this ecological study, a series of linear and polynomial regression tests were performed between country-specific UVB estimates adjusted for cloud cover and crude incidence rates of CRC for different age groups. Multiple linear regression was used to investigate the association between crude incidence rates of colorectal cancer and UVB estimate adjusting for urbanization, skin pigmentation, smoking, animal consumption, per capita GDP, and life expectancy. Statistical analysis was followed by geospatial visualization by producing choropleth maps. Results The inverse relationship between UVB exposure and CRC crude rates was stronger in older age groups at the country level. Quadratic curve fitting was preferred, and these models were statistically significant for all age groups. The inverse association between crude incidence rates of CRC and UVB exposure was statistically significant for age groups above 45 years, after controlling for covariates. Conclusion The age-dependent inverse association between UVB exposure and incidence of colorectal cancer exhibits a greater effect size among older age groups in global analyses. Studying the effect of chronic vitamin D deficiency on colorectal cancer etiology will help in understanding the necessity for population-wide screening programs for vitamin D deficiency, especially in regions with inadequate UVB exposure. Further studies are required to assess the need for adequate public health programs such as selective supplementation and food fortification.

scholarly journals High prevalence of TP53 loss and whole-genome doubling in early-onset colorectal cancer

2021 ◽  
Author(s):  
Jeong Eun Kim ◽  
Jaeyong Choi ◽  
Chang-Ohk Sung ◽  
Yong Sang Hong ◽  
Sun Young Kim ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Early Onset ◽  
Large Scale ◽  
Late Onset ◽  
Age Groups ◽  
The Cancer Genome Atlas ◽  
Whole Genome ◽  
Genome Doubling ◽  
Whole Genome Doubling ◽  
Early Onset Colorectal Cancer

AbstractThe global incidence of early-onset colorectal cancer (EO-CRC) is rapidly rising. However, the reason for this rise in incidence as well as the genomic characteristics of EO-CRC remain largely unknown. We performed whole-exome sequencing in 47 cases of EO-CRC and targeted deep sequencing in 833 cases of CRC. Mutational profiles of EO-CRC were compared with previously published large-scale studies. EO-CRC and The Cancer Genome Atlas (TCGA) data were further investigated according to copy number profiles and mutation timing. We classified colorectal cancer into three subgroups: the hypermutated group consisted of mutations in POLE and mismatch repair genes; the whole-genome doubling group had early functional loss of TP53 that led to whole-genome doubling and focal oncogene amplification; the genome-stable group had mutations in APC and KRAS, similar to conventional colon cancer. Among non-hypermutated samples, whole-genome doubling was more prevalent in early-onset than in late-onset disease (54% vs 38%, Fisher’s exact P = 0.04). More than half of non-hypermutated EO-CRC cases involved early TP53 mutation and whole-genome doubling, which led to notable differences in mutation frequencies between age groups. Alternative carcinogenesis involving genomic instability via loss of TP53 may be related to the rise in EO-CRC.

scholarly journals The decomposition of life expectancy for age and cause of death in Tuscany, Italy

2019 ◽  
Vol 29 (Supplement_4) ◽  
Author(s):  
N Nante ◽  
L Kundisova ◽  
F Gori ◽  
A Martini ◽  
F Battisti ◽  
...  
Keyword(s):  
Life Expectancy ◽  
Causes Of Death ◽  
National Level ◽  
Age Groups ◽  
Resistant Bacteria ◽  
Mortality Data ◽  
Life Expectancy At Birth ◽  
Icd 10 ◽  
Reduction Of Mortality ◽  
The Impact

Abstract Introduction Changing of life expectancy at birth (LE) over time reflects variations of mortality rates of a certain population. Italy is amongst the countries with the highest LE, Tuscany ranks fifth at the national level. The aim of the present work was to evaluate the impact of various causes of death in different age groups on the change in LE in the Tuscany region (Italy) during period 1987-2015. Material and methods Mortality data relative to residents that died during the period between 1987/1989 and 2013/2015 were provided by the Tuscan Regional Mortality Registry. The causes of death taken into consideration were cardiovascular (CVS), respiratory (RESP) and infective (INF) diseases and cancer (TUM). The decomposition of LE gain was realized with software Epidat, using the Pollard’s method. Results The overall LE gain during the period between two three-years periods was 6.7 years for males, with a major gain between 65-89, and 4.5 years for females, mainly improved between 75-89, &lt;1 year for both sexes. The major gain (2.6 years) was attributable to the reduction of mortality for CVS, followed by TUM (1.76 in males and 0.83 in females) and RESP (0.4 in males; 0.1 in females). The major loss of years of LE was attributable to INF (-0.15 in females; -0.07 in males) and lung cancer in females (-0.13), for which the opposite result was observed for males (gain of 0.62 years of LE). Conclusions During the study period (1987-2015) the gain in LE was major for males. To the reduction of mortality for CVS have contributed to the tempestuous treatment of acute CVS events and secondary CVS prevention. For TUM the result is attributable to the adherence of population to oncologic screening programmes. The excess of mortality for INF that lead to the loss of LE can be attributed to the passage from ICD-9 to ICD-10 in 2003 (higher sensibility of ICD-10) and to the diffusion of multi-drug resistant bacteria, which lead to elevated mortality in these years. Key messages The gain in LE during the period the 1987-2015 was higher in males. The major contribution to gain in LE was due to a reduction of mortality for CVS diseases.

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