Prognostic Significance of Synchronous Colorectal Adenocarcinoma: A Matched-Pair Analysis.

OBJECTIVE: To determine the prognostic significance of the synchronous colorectal cancer (S-CRC) on survival and recurrence rate. METHODS: Authors conducted an analysis of 90 colorectal adenocarcinoma patients who received a curative (R0) resection with a full course of standard adjuvant treatment. A total of 45 patients diagnosed with S-CRC at the time of initial presentation were individually matched to a group of 45 solitary CRC patients in pair at a ratio of 1:1. The case-matched criteria included age (± 5 years), gender, tumor location, and tumor stage. For S-CRC, the most advanced pathologic lesion was defined as the index lesion, and the matching cancer stage was categorized according to the index lesion. The N-stage was determined based on all lymph nodes. RESULT: There were a higher number of retrieved nodes in patients with S-CRC than those with solitary CRC. The median (min, max) of the total number of retrieved nodes for S-CRC was 18 (3, 53) nodes, compared to 14 (4, 45) nodes for solitary CRC (p < 0.01). All patients were without distant metastasis (stage I to III). The total accumulative number of patients experiencing tumor recurrence was 9 (20%) amongst the solitary CRC patients and 18 (40%) amongst the S-CRC patients at the 15-year surveillance period (p<0.05). The disease-free survival (DFS) (mean + SD) was 147.6 + 9.3 months in the solitary CRC group, compared to 110.5 + 11.7 months in the S-CRC group (p<0.05). Amongst S-CRC patients, those having primary and synchronous tumors located across anatomical segments had poorer DFS (70.5 months) and higher 15-year tumor recurrence rate (17.8%) than those with all tumors in the same or contiguous anatomical segments. In addition, the S-CRC patients with all tumors located in contiguous segment had a longer DFS (123.7 months) than the other types of anatomical correlation. CONCLUSION: Patients with S-CRC had worse prognosis than those with solitary CRC. For S-CRC, the anatomical correlation between the primary and the synchronous tumors may influence DFS and recurrence rate.

Total thyroidectomy versus less-than-total thyroidectomy for papillary thyroid carcinoma of isthmus: a systematic review and meta-analysis.

Background: Papillary thyroid carcinoma of isthmus (PTCI) has a more aggressive nature, a higher rate of lymph node metastasis and tumor recurrence. Clinicians have different preferences for the surgical approach to PTCI, but there are no definitive guidelines. The purpose of this article is to compare the oncologic outcomes and complications of total thyroidectomy and less-than-total thyroidectomy for PTCI using meta-analysis. Methods: We searched PubMed, Embase, Cochrane Library, and Web of Science databases for articles that met the inclusion criteria, with an unlimited start date and an end date of February 19, 2023. Exclusion criteria were applied to filter out articles for further analysis. Ultimately, seven articles were used for analysis, all of which were retrospective studies. The MINORS scale was adopted to evaluate the quality of the included literature, and Review Manager 5.4 was used for data analysis. Results: A total of 814 patients were included in the seven articles, including 401 in the less-than-total thyroidectomy group (trial group) and 413 in the total thyroidectomy group (control group). The results of the meta-analysis showed that there was no significant difference in the tumor recurrence rate between the two groups after total thyroidectomy or less-than-thyroidectomy for PTCI (odds ratio, 1.51; 95% confidence interval: 0.49, 4.65; P=0.47), and there was no statistical difference in the incidence of all postoperative complications between the two groups. Conclusions: There may be some limitations in this analysis, such as publication bias and the fact that the included articles were all retrospective studies with a certain degree of heterogeneity. PTCI patients with early staging and no significant lymph node metastases may be able to choose a more conservative surgical approach, which is less-than-total thyroidectomy. Patients with relatively late staging and significant preoperative lymph node metastases or extra thyroidal extension may opt for total thyroidectomy plus lymph node dissection in the central region and, if necessary, lymph node dissection in the lateral cervical region.

Análise de 5 anos de seguimento de hepatectomias em portadores de turmor hepático / Analysis of 5 years following hepatectomy in patients with liver tumor

Introdução: os tumores hepáticos malignos são muito mais comuns do que os benignos, sendo os metastáticos ou secundários 20 vezes mais frequentes do que os primários. A hepatectomia permanece como o principal e mais utilizado método de tratamento dos tumores hepáticos. Infelizmente, esse método é aplicável apenas em cerca de 10% dos casos. Analisar a sobrevida dos pacientes portadores de tumor hepático submetidos a ressecções hepáticas no Estado do Amazonas, assim como as principais complicações pós-operatórias e índice de recidiva tumoral. Métodos: estudo retrospectivo, analisando os prontuários e laudos anatomopatológicos dos pacientes submetidos à ressecção hepática na Fundação Centro de Controle de Oncologia do Amazonas (FCECON), entre janeiro de 2006 a dezembro de 2010. Resultados: foram realizadas 34 ressecções hepáticas, sendo 55,9% tumores malignos primários do fígado, 26,5% doença metastática e 17,6% tumores benignos. Houve 17,64% de complicações pós-operatórias, sendo as mais graves o abscesso subfrênico e a hemorragia intra-abdominal. A taxa de reoperação foi de 2,94%. Não houve mortalidade operatória. O índice de recidiva tumoral foi de 23,5%, com óbito ocorrendo em 75% destes casos. A taxa de sobrevida em um, três e cinco anos foi respectivamente 96%, 89% e 68%. Conclusão: a cirurgia hepática tem se tornado cada vez mais factível e as complicações pós-operatórias, sob maior controle clínico, tem diminuído consideravelmente a mortalidade.

Introduction: malignant Hepatic tumors are much more common than the benign ones, being the metastatics 20 times more frequent than the primaries. Hepatectomy remains as the more common and used method in its treatment. Unfortunately this method can be applied in around 10% of cases. To analyze the overall survival of malignant liver tumors patients who underwent a hepatic resection in the state of Amazonas, as well as the post-operative complications and recurrence rate. Methods: retrospective study, analysing the patient records and anatomopathologic reports of patients who underwent liver resection in Fundação Centro de Controle de Oncologia do Amazonas (FCECON), between january 2006 and december 2010. Results: a total amount of 34 liver resections were done, being 55,9% liver primary malignant tumors, 26,5% metastatic disease e 17,6% benign tumors. There were 17,64% of post-operative complications, being the more serious diaphragmatic abscess and intra-abdominal bleeding. Reoperation rate was of 2,94%. There were no preoperative mortality. Tumor recurrence was 23,5%, with death happening in 75% of these cases. Overall survival in one, three and five years were respectively 96%, 89% e 68%. Conclusion: hepatic surgery has been increasingly more appliable and post-operative complications, under strict clinical care, has considerably diminished mortality.