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creased the risk of recurrence, especially in Stage III CRC patients, and that the recurrence frequently occurred locally.
Colorectal cancer is relatively uncommon malignancy in India when compared with the Western world, disease affecting individuals above 40 years of age and is rare below 40 years of age. However, now there is an increase in young age presentation globally and India.
We conducted a retrospective study of all colorectal carcinomas colorectal cancer (CRC) that were diagnosed during the past 6 years, i.e., from January 2011 to December 2016. Patients were divided into two groups - below 40 years and above 40 years. The records were analyzed in detail for age, gender, site of primary tumor, and histopathological type. The results of the two groups were compared and in turn compared with population-based cancer registry (PBCR) of Delhi, Mumbai, Kolkata, Chennai, and Bengaluru.
Two hundred and twenty-three patients were diagnosed to have CRC. Patients diagnosed below 40 years of age comprised 39.5% (88) compared with PBCR of Delhi (19.75%, P value significant at <0.05), Mumbai (10.9%), P value significant at <0.05), Kolkata (13.1%, P value significant at <0.05), Chennai (8.6%, P value significant at <0.05), and Bengaluru (13.6%, P value significant at <0.05). Among patients below 40 years of age, majority were males (56.8%), most occurred in the rectum (75%). Selleckchem Z-VAD-FMK Poorly differentiated, mucin-secreting, signet ring type adenocarcinomas are most frequent (35.2%) and presented at advanced stage (33%). This was similar to those reported in other literatures.
Study shows that there is a rise in younger age presentation in our institution with rectal site predominance, advanced stage, and poor histopathological variants.
Study shows that there is a rise in younger age presentation in our institution with rectal site predominance, advanced stage, and poor histopathological variants.
In the present study, we evaluated the clinical prognostic value of human leukocyte antigen (HLA (Class I tumor cell expression in a series of colorectal cancer (CRC) patients and also explored the association of this expression profile with molecular features such as mutation status of KRAS and BRAF, microsatellite stability status, and clinicopathological characteristics of the patients.
Formalin-fixed paraffin-embedded tumor tissue of 258 CRC patient's sections were immunohistochemically stained and subsequently quantified for HLA Class I expression by the tumor cells. Determination of microsatellite instability (MSI) tumor status was ascertained using mononucleotide repeat microsatellite targets. KRAS and BRAF mutations were screened by polymerase chain reaction (PCR)-sequencing and cast-PCR, respectively.
HLA Class I expression was normal in 91 cases (35.3%), downregulated in 119 (46.1%), and loss of expression in 48 (18.6%) cases. Forty (15.5%) tumors were MSI-H (MSH), 49 were MSI-L (19%), and 169 were microsatellite stable (MSS) (65.5%). Thirty-six (14%) and 15 (5.8%) of the patients exhibited mutation in the KRAS and BRAF, respectively. It was found that patients with downregulated expression of HLA Class I were associated with Stage II tumors (P < 0.001) and a MSS tumor status (P < 0.001), while patients with loss of expression were associated with MSH status (P < 0.001). Univariate and multivariate analyses revealed that HLA Class I downregulated expression was an independent prognostic parameter for shorter overall patient survival time (hazard ratio 1.8, P = 0.003).
HLA Class I expression is an independent and sensitive clinical prognostic marker that might be used in CRC patients.
HLA Class I expression is an independent and sensitive clinical prognostic marker that might be used in CRC patients.
The sentinel lymph nodes (SLNs), as most other regions, are prone to tumoral invasion. In colorectal cancers, they can help the higher levels of pathological examination techniques.
We attempted to investigate the efficiency of the use of radioactive tracer in identifying SLNs in colorectal cancers using the same pathological technique.
This cross-sectional, single-center study was carried out from 2014 to august 2016 at Mashhad University of Medical Sciences.
The study population included 100 patients with colorectal cancers. We used a radioactive tracer to detect SLNs and to compare the number and involvement of SLNs and non-SLNs generally and in terms of the tumor site. For pathological study, we used the same conventional method in both the groups.
Statistical analysis was performed using SPSS 22.0 software (IBM Corp., Armonk, NY, USA) with Chi-square and Fisher's exact test, Student's t-test, ANOVA test, Mann-Whitney U-test, and Kruskal-Wallis test.
SLNs were detected in 89 of 100 patients. All the remaining 11 patients had T4 lower rectal cancer and the injection was performed ex vivo. We noted ten cases of upstaging due to SLN mapping and nine cases of false negative. Thus, the sensitivity was found to be 43.75%at and the accuracy was 78.65%.
We used the same traditional method in both the groups, and our sensitivity, accuracy and upstaging rate were fewer than similar studies. Our recommendation for further studies is to use intensive SLN biopsy method in both groups of SLNs and non-SLNs.
We used the same traditional method in both the groups, and our sensitivity, accuracy and upstaging rate were fewer than similar studies. Our recommendation for further studies is to use intensive SLN biopsy method in both groups of SLNs and non-SLNs.
Human papillomavirus (HPV) is emerging as a risk factor for esophageal squamous carcinoma. The prognostic value of the HPV status has been investigated. However, the results are much controversial.
This study aims to document the association of HPV infection and mutation of p53 gene in esophageal squamous cell carcinoma (ESCC) and its impact on treatment outcome.
The study was conducted over a period of 12 months. A total of 30 cases of ESCC who were primarily to be treated with radiotherapy/chemoradiotherapy were included in the study. All the tissue samples for biopsy were subjected to immunohistochemistry to study p53 and p16 expression, which is a surrogate marker for HPV. The patients were treated by radiotherapy alone or concurrent chemoradiotherapy depending on performance status and stage of disease. The impact of p16 and p53 on overall survival (OS) and disease-free survival (DFS) was determined.
The median OS of HPV-positive patients was 22 months (95% confidence interval [CI] 12-31) as compared to 13 months (95% CI 7-18) for HPV-negative patients (P = 0.
Website: https://www.selleckchem.com/products/z-vad(oh)-fmk.html
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