Site specific genetic differences in colorectal cancer via Next-Generation-Sequencing using a multigene panel.

AIM: Next-generation sequencing (NGS) has been proposed as a comprehensive and efficient genomic profiling tool to guide personalized therapy for colorectal cancer. This study aimed to review the site-specific difference and the potential benefits of actionable mutation panel for colorectal cancer in relation to the clinicopathological features. MATERIAL AND METHODS: One hundred and six patients who underwent colorectal surgery with curative or palliative intent for histopathologically confirmed carcinoma between June 2016 and June 2018 were identified from a prospectively maintained database. Formalin-fixed, paraffin-embedded tumor tissues were analyzed for actionable variants in 11 genes via NGS (EGFR, ALK, KRAS, NRAS, KIT, BRAF, PDGFRA, ERBB2, ERBB3, ESR1, and RAF1). RESULTS: Most of the primary tumors were in the rectum (49 patients; 46.2%) followed by the right colon (32 patients; 30.1%) and left colon (25 patients; 23.5%), respectively. Of sequenced cases, 43 KRAS mutations, 7 EGFR mutations, 6 NRAS mutations, 6 BRAF mutations, 3 KIT mutations, 1 ERBB2 mutation, 1 PDGFRA mutation, and 1 RAF1 mutation were identified in 106 patients. The frequency of mutations is mostly concentrated on the right colon group. The highest drug resistance observed in all patients was against Cetuximab and Panitumumab, and the highest drug resistance was found in the right colon group (53.1%). CONCLUSIONS: The utility of actionable multigene panel revealed the value of a well-designed next-generation sequencing workflow in the practical use of clinical outcomes via the prediction of responsiveness to therapeutic agents or indications for novel treatment modalities in addition to prognosis estimate. KEY WORDS: Colorectal Cancer, Drug Resistance, Next-Generation Sequencing.

Synchronous and metachronous neoplasms of different histogenesis with gastrointestinal stromal tumor (GIST): 10 years experience of a single institution.

AIM: Gastrointestinal stromal tumors (GISTs) are the most common primary mesenchymal neoplasms of the gastrointestinal tract. Significant advances have been made in its pathogenesis, diagnosis, and treatment over the past few decades. However, little is known about the occurrence of synchronous or methacronous tumors with other histogenesis in addition to GISTs. The aim of this study was to present a series of 15 patients diagnosed with a second primary neoplasm in addition to GIST. MATERIAL AND METHODS: Patients who were diagnosed with both GIST and other primary neoplasm between January 2010 and December 2019 were included in the study. Demographic, clinicopathologic and immunohistochemical parameters of the patients were analyzed along with the follow-up results RESULTS: This study included 12 men and 3 women with a median age of 68 years (range: 57-83 years). Of the GISTs, 93.3% were localized in the stomach and 73.3% were at very low / low risk category. Of the second primary tumors, 66.6% were in the gastrointestinal tract. Detection of the GIST was synchronous in 9 cases, metachronous in 2 cases and preceded the GIST diagnosis in 4 cases. GIST was incidentally found intra-operatively in 3 of the cases. The mean size of the synchronous GISTs was 20 mm while the most common GIST-associated malignancy was gastric adenocarcinoma. The median follow-up times was 62 months (range: 13-129 months). CONCLUSIONS: The prevalence of secondary malignancies in GIST patients is significantly higher than the healthy population. The high occurrence rate of additional primary tumors in GIST patients has focused the attention of surgeons on this problem. While it is not yet clear if there is a causal association or a common genetic mechanism for the concomitant occurrence of GIST with other malignancies, a closer surveillance of GIST patients is needed due to their proved increased prevalence of a second primary tumor especially during the first year after diagnosis. KEY WORDS: Gastrointestinal stromal tumor, Coexistence, Synchronous malignancy, Second neoplasm, Gastric adenocarcinoma.

Pre-operative Neo-adjuvant Chemotherapy Related miRNAs as Key Regulators and Therapeutic Targets in Colorectal Cancer.

BACKGROUND: In colorectal cancer, the investigation of cancer pathogenesis and the determination of the relevant gene and gene pathways is particularly important to provide a basis for treatment-oriented studies. miRNAs which affect gene regulation in the molecular pathogenesis of cancer, have an active role in carcinogenesis. In the literature, miRNA expression levels have been associated with metastasis and prognosis in different cancers. OBJECTIVE: In our study, expression profiling of miRNAs involved in oncogenic and apoptotic pathways in patients with locally advanced colorectal cancer receiving neoadjuvant therapy was performed. METHODS: miRNAs were isolated from three different FFPE tissue samples taken at different times of the same patient (tumor tissue taken at the time of diagnosis, normal tissue samples, and after neoadjuvant therapy). The expression analysis of 84 miRNAs determined by PCR array (Fluidigm, USA) and mediated meta-analysis was performed comparatively to each study and non-cancerous control group. Evaluations were performed with ΔΔCT calculations. RESULTS: As a result of the miRNA PCR array study, in addition to differences were observed in miRNA expression between control and study groups. The potential biomarkers which were hsamiR- 215-5p, hsa-miR-9-59, hsa-miR-193a-5p, hsa-miR-206, hsa-miR-1, hsa-miR-96-5p have been detected for possible treatment resistance, prognosis and predispositions to cancers. CONCLUSION: In patients with colorectal cancer, miRNA expression in the tumoral regions before and after neoadjuvant therapy has represented a variable pattern. It has been shown that miRNA studies can be used to predict the clinical course and response to treatment with differences in expression levels. It has been concluded that specific miRNAs may be candidate biomarkers for colorectal cancer.

A Multicenter Study of Genotype Variation/Demographic Patterns in 2475 Individuals Including 1444 Cases With Breast Cancer in Turkey.

Objective: Breast cancer (BC) is the most common cancer type in women and may be inherited, mostly in an autosomal dominant pattern. The clinical diagnosis of BC relies on the published diagnostic criteria, and analysis of two genes, BRCA1 and BRCA2, which are strongly associated with BC, are included in these criteria. The aim of this study was to compare BC index cases with non-BC individuals in terms of genotype and diagnostic features to investigate the genotype/demographic information association. Materials and Methods: Mutational analyses for the BRCA1/BRCA2 genes was performed in 2475 individuals between 2013-2022 from collaborative centers across Turkey, of whom 1444 with BC were designated as index cases. Results: Overall, mutations were identified in 17% (421/2475), while the percentage of mutation carriers in cases of BC was similar, 16.6% (239/1444). BRCA1/BRCA2 gene mutations were detected in 17.8% (131/737) of familial cases and 12% (78/549) of sporadic cases. Mutations in BRCA1 were found in 4.9%, whereas 12% were in BRCA2 (p<0.05). Meta-analyses were performed to compare these results with other studies of Mediterranean-region populations. Conclusion: Patients with BRCA2 mutations were significantly more common than those with BRCA1 mutations. In sporadic cases, there was a lower proportion with BRCA1/BRCA2 variants, as expected, and these results were consistent with the data of Mediterranean-region populations. However, the present study, because of the large sample size, revealed more robust findings than previous studies. These findings may be helpful in facilitating the clinical management of BC for both familial and non-familial cases.

Analysis of appendiceal neoplasms in 1,423 appendectomy specimens: a 10-year retrospective cohort study from a single institution.

OBJECTIVE: This study aimed to reveal the incidence, clinicopathological, and oncological outcomes of appendiceal neoplasms. METHODS: This is a retrospective cohort study from a single institution. Patients with a pathological diagnosis of malignancy who underwent appendectomy between January 2011 and 2021 were included in the study, and groups were formed according to pathological type. Clinical, pathological, and oncological results were compared in these groups. RESULTS: The incidence of neoplasia was 2.38% (n=34) in a cohort of 1,423 appendectomy cases. Of the cases, 56% (n=19) were female. The median age in the entire cohort was 55.5 (range: 13-106) years. In the cohort, the rate of neuroendocrine tumor mucinous cystadenoma adenocarcinoma, and low-grade appendiceal mucinous neoplasm, according to the American Joint Committee on Cancer classification of appendiceal neoplasms, was 32.3% (n=11), 26.4% (n=9), 26.4% (n=9), and 14.7% (n=5), respectively. Neuroendocrine tumor patients (median age: 35 years) were younger than the other groups (p=0.021). Secondary complementary surgery was performed in 66.7% (n=6) of adenocarcinoma patients and 27.3% (n=3) of neuroendocrine tumor patients. Right hemicolectomy was performed in all neuroendocrine tumor patients requiring secondary surgery, while right hemicolectomy was performed in three adenocarcinoma patients and cytoreductive surgery and hyperthermic intraperitoneal chemotherapy in three adenocarcinoma patients. After a median follow-up of 44.4 months (95% confidence interval: 18.6-70.1), the mean survival rate was 55% in appendiceal adenocarcinoma patients compared to 100% in neuroendocrine tumor patients. CONCLUSION: Appendiceal neoplasms are rare but remain an important cause of mortality. Appendiceal adenocarcinomas are associated with poorer oncological outcomes compared to other neoplasms.

The role of C-reactive protein ratio in predicting mortality in patients with Fournier gangrene.

PURPOSE: This study aimed to determine the C-reactive protein (CRP) ratio for the survival of patients with Fournier gangrene (FG). METHODS: Fifty-two patients with FG between January 2011 and September 2018 were retrospectively analyzed. Data on clinical presentation, Fournier Gangrene Severity Index (FGSI), CRP ratio, management, and outcome were analyzed. The CRP ratio was calculated as preoperative CRP/postoperative CRP value that measured 48 hours after surgical intervention. Possible alternative cutoff points for the FGSI and CRP were determined by receiver operating characteristic (ROC) analyses. The risk factors related to the prognosis were evaluated by univariate and multivariable logistic regression analyses. RESULTS: The mean CRP ratios were 6.7±6.6 in the survivor group and 1.2±0.8 in the nonsurvivor group (P=0.001). FGSI was significantly higher in the non-survivor group compared to survivor group (8.5±2.5 vs. 3.5±2.2, P=0.001). There was a negative correlation between FGSI and CRP ratio (r=-0.51). ROC analysis determined the cutoff value as 1.78 for CRP (sensitivity, 86%; specificity, 82%; area under the ROC curve, 0.90) to predict death. The incidence of death for patients with CRP ratio of ≤1.78 increased 26.7 fold for those with CRP ratio of >1.78 (95% confidence interval [CI], 4.8-146.5; P=0.001). In the multivariable logistic regression model, CRP ratio (odds ratio [OR], 10.3; 95% CI, 1.5-72.2; P=0.019) and FGSI (OR, 17.8; 95% CI, 2.6-121.1; P=0.003) were independent risk factors for death. CONCLUSION: The CRP ratio is a simple method to use to predict mortality in FG.

Tumor-derived CTF1 (cardiotrophin 1) is a critical mediator of stroma-assisted and autophagy-dependent breast cancer cell migration, invasion and metastasis.

Macroautophagy/autophagy is an evolutionarily conserved cellular stress response mechanism. Autophagy induction in the tumor microenvironment (stroma) has been shown to support tumor metabolism. However, cancer cell-derived secreted factors that initiate communication with surrounding cells and stimulate autophagy in the tumor microenvironment are not fully documented. We identified CTF1/CT-1 (cardiotrophin 1) as an activator of autophagy in fibroblasts and breast cancer-derived carcinoma-associated fibroblasts (CAFs). We showed that CTF1 stimulated phosphorylation and nuclear translocation of STAT3, initiating transcriptional activation of key autophagy proteins. Additionally, following CTF1 treatment, AMPK and ULK1 activation was observed. We provided evidence that autophagy was important for CTF1-dependent ACTA2/α-SMA accumulation, stress fiber formation and fibroblast activation. Moreover, promotion of breast cancer cell migration and invasion by activated fibroblasts depended on CTF1 and autophagy. Analysis of the expression levels of CTF1 in patient-derived breast cancer samples led us to establish a correlation between CTF1 expression and autophagy in the tumor stroma. In line with our in vitro data on cancer migration and invasion, higher levels of CTF1 expression in breast tumors was significantly associated with lymph node metastasis in patients. Therefore, CTF1 is an important mediator of tumor-stroma interactions, fibroblast activation and cancer metastasis, and autophagy plays a key role in all these cancer-related events.Abbreviations: ACTA2/α-SMA: actin, alpha 2, smooth muscle CAFs: cancer- or carcinoma-associated fibroblasts CNT Ab.: control antibody CNTF: ciliary neurotrophic factor CTF1: cardiotrophin 1 CTF1 Neut. Ab.: CTF1-specific neutralizing antibody GFP-LC3 MEF: GFP-fused to MAP1LC3 protein transgenic MEF LIF: leukemia inhibitory factor IL6: interleukin 6 MEFs: mouse embryonic fibroblasts MEF-WT: wild-type MEFs OSM: oncostatin M TGFB/TGFß: transforming growth factor beta.

The effect of D3 dissection on postoperative morbidity and early mortality in gastric cancer patients who underwent curative total gastrectomy.

AIM: The present study presents the factors associated with early complications and mortality in patients undergoing total gastrectomy. MATERIAL AND METHOD: The study included patients who underwent curative total gastrectomy for gastric adenocarcinoma between January 2001 and December 2016 in the General Surgery Department of the Çukurova University Medical Faculty Hospital. The patients were divided into D1, D2, and D3 groups depending on the lymph node dissection width, and the demographic and clinical data and mortality were compared. In addition, mortality-associated factors were analyzed. RESULTS: The study sample included 148 (62.7%) males and 88 (37.3%) females, with a mean age of 65.5±11.4 years. There were 87 patients in the D1 group, 117 in the D2 group, and 23 in the D3 group. As expected, the duration of the operation was longer in the D2 and D3 groups (179 vs. 224 vs. 252; p<0.001), and these groups had also higher numbers of lymph nodes dissected (8 vs. 20 vs. 32; p<0.001) and metastatic lymph nodes (2.6 vs. 7.5 vs. 9.2; p<0.001). The analysis of the operation type in terms of complications revealed a significant relationship only with stump blowout, which was significantly more common after D3 dissection than following D2 and D1 dissections (p:0.01). The male gender (87.5 vs 60.9 p:0.03) was more associated with mortality. CONCLUSION: D1, D2 and D3 Lymph node dissection in gastric cancer surgery can be safely performed with low mortality and morbidity rates by surgeons with sufficient technical knowledge, and in centers with sufficient hospital volume. KEY WORDS: Complications, Gastric Cancer, Mortality, Lymph Node Dissection.

Analysis of appendiceal neoplasms in 1,423 appendectomy specimens: a 10-year retrospective cohort study from a single institution

SUMMARY OBJECTIVE: This study aimed to reveal the incidence, clinicopathological, and oncological outcomes of appendiceal neoplasms. METHODS: This is a retrospective cohort study from a single institution. Patients with a pathological diagnosis of malignancy who underwent appendectomy between January 2011 and 2021 were included in the study, and groups were formed according to pathological type. Clinical, pathological, and oncological results were compared in these groups. RESULTS: The incidence of neoplasia was 2.38% (n=34) in a cohort of 1,423 appendectomy cases. Of the cases, 56% (n=19) were female. The median age in the entire cohort was 55.5 (range: 13-106) years. In the cohort, the rate of neuroendocrine tumor mucinous cystadenoma adenocarcinoma, and low-grade appendiceal mucinous neoplasm, according to the American Joint Committee on Cancer classification of appendiceal neoplasms, was 32.3% (n=11), 26.4% (n=9), 26.4% (n=9), and 14.7% (n=5), respectively. Neuroendocrine tumor patients (median age: 35 years) were younger than the other groups (p=0.021). Secondary complementary surgery was performed in 66.7% (n=6) of adenocarcinoma patients and 27.3% (n=3) of neuroendocrine tumor patients. Right hemicolectomy was performed in all neuroendocrine tumor patients requiring secondary surgery, while right hemicolectomy was performed in three adenocarcinoma patients and cytoreductive surgery and hyperthermic intraperitoneal chemotherapy in three adenocarcinoma patients. After a median follow-up of 44.4 months (95% confidence interval: 18.6-70.1), the mean survival rate was 55% in appendiceal adenocarcinoma patients compared to 100% in neuroendocrine tumor patients. CONCLUSION: Appendiceal neoplasms are rare but remain an important cause of mortality. Appendiceal adenocarcinomas are associated with poorer oncological outcomes compared to other neoplasms.

Acute appendicitis during coronavirus disease 2019 in Türkiye: Changes in clinical approach, treatment, and diagnosis modalities: A retrospective and cohort study.

BACKGROUND: The novel coronavirus disease 2019 (COVID-19) has resulted in major changes in health-care systems and emer-gency surgical interventions. Here, we examined patients with acute appendicitis who presented to emergency departments and com-pared diagnosis, treatment, and post-treatment processes before and during the pandemic period and investigated how the pandemic affected management of acute appendicitis. METHODS: A national, multicenter, and cohort study model was designed that included patients older than 18 years of age diag-nosed with acute appendicitis clinically and/or radiologically, with patients compared before (pre-pandemic period: January 1-April 30, 2019) and after (pandemic period: January 1-April 30, 2020) the pandemic. Our investigation included comparisons of pre-operative imaging methods, presence of plastron appendicitis/abscess, conservative/surgical approach, type of anesthesia given, laparoscopic/open surgical approach, bowel resection rates, drain insertion rates, and presence of post-operative complications RESULTS: For the two study groups, 8972 patients from 69 centers were examined, with 4582 patients operated in the pre-pan-demic period and 4234 patients operated in the pandemic period. During the pandemic period, 63.6% of patients underwent open surgery, whereas 34.4% had laparoscopic surgery. Although 60 patients (1.3%) requested non-operative follow-up in the pre-pandemic period, 94 patients (2.2%) requested this in the pandemic period. When conditions of patients were evaluated regardless of their own wishes, 114 patients (2.4%) before and 163 patients (3.8%) during the pandemic received non-operative follow-up. CONCLUSION: Our study did not show the direct correlation between the application of COVID-19-related restrictions and the severity of acute appendicitis. Although non-operative management rates have been increased during the COVID-19 period, the incidences of both complicated and the uncomplicated appendicitis were similar during the COVID-19 crisis period. Given this infor-mation non-operative management can be employed for patients diagnosed with appendicitis.

Prognostic significance of preoperative hemoglobin and albumin levels and lymphocyte and platelet counts (HALP) in patients undergoing curative resection for colorectal cancer.

BACKGROUND/OBJECTIVE: In this study, we aimed to determine the relationship between HALP score and postoperative complications (According to Clavien-Dindo classification 3 and above), in patients with colo-rectal cancer who underwent curative surgical resection and to determine its clinical value in predicting prognosis. METHODS: 279 patients who underwent curative surgery for colorectal cancer between 2015-2018 were included in the study. The HALP value was calculated by dividing the product of hemoglobin (g/L), albumin (g/L), lymphocytes (/ L) by the number of platelets (/ L). In order to generate a cut off value for the HALP value, ROC analysis and ROC curve were created. The patients were divided into two groups according to survival, and cut off value was found by ROC analysis: Group 1 (Low HALP) and Group 2 (High HALP). Demographic, clinical characteristics, intraoperative , postoperative results and mean survival were compared between the groups. RESULTS: The patients were divided into two groups according to cut off value of 15.73. Group 1 consisted of 113 patients; Group 2 consisted of 166 patients. Average age was similar in the groups (62vs61, p:0.480). Patients in Group 1 received more neoadjuvant therapy (31%vs21%, p:0.064). CEA levels were higher in Group 1 (7.6vs4.3 p:0.034). Mucinous adenocarcinoma histological type was more common in Group 1 (24%vs13% ,p:0.040). Pathological grade poorly differentiated was more common in Group 1 (27%vs13%). Postoperative outcomes was similar to groups We found the HALP score as a risk factor for survival in multivariate analysis (HR=0.8552 95% (CI:0.6575-1.1125, p:0.007). If the HALP value is below 15.73, it is assumed that the average survival is 28 months with 45.4% sensitivity and 66.938% specificity. CONCLUSION: Our results showed that the HALP score is closely related to clinic pathological features and is an independent prognostic factor for survival. Its value in estimating mean survival is limited. KEY WORDS: Colorectal cancer, HALP score, Immunity, Nutrition.

Surgical myotomy and anterior fundoplication for achalasia disease. Short-term outcomes.

AIM: Achalasia is a well-known disease among esophageal motility disorders, and all treatments for this disease are aimed at relaxing the lower esophageal sphincter (LES). Recently, endoscopic and surgical myotomy techniques are used more frequently because they give better results than other conservative techniques. In this study, we aimed to present the early results of surgical myotomy and anterior fundoplication techniques in the treatment of achalasia-related dysphagia. METHODS: Our study enrolled patients who operated with laparoscopic myotomy and anterior fundoplication for achalasia between 2014 and 2019. Patients' demographic and clinical properties, operative details, and postoperative shortterm outcomes were retrospectively analyzed. RESULTS: A total of 25 patients (11 women, 14 men) were enrolled. The mean age was 40.72±13.6 (range 18-66) years. The mean LES pressure was 26.6±11.2 (range 16-50) mmHg. The mean esophageal myotomy length was 7.83±1.88 (range 7-12 cm). Esophagus perforation developed in one patient during myotomy. The mean time to start oral feeding was 2.56±0.76 (range 2-4) days, and the mean length of hospital stay was 4.96±1.17 (range 3-8) days. During the follow-up, symptom regression was observed in 92 % of patients at the end of a 1-year. CONCLUSION: According to our results and available literature, myotomy with Dor fundoplication is an effective technique that can be used to treat achalasia disease. KEY WORDS: Achalasia, Dor fundoplication, Heller myotomy.

Laparoscopic revisional surgery for failed anti-reflux procedures.

AIM: Failure ratio of an anti-reflux surgery is 2-17% in adults. After unsuccessful fundoplications, if necessary, revisional surgeries can be performed. Revisional surgeries are technically difficult to perform and require professionally advanced experience. On the other hand, it is still controversial which technique should be used in revisional surgery. The aim of this study is to present our experience with revisional surgical procedures for complications or recurrences after anti-reflux surgeries. MATERIAL AND METODS: A total of 18 patients, 16 of whom were referred to our clinic from other centers, and who underwent revisional surgery for failed fundoplication between 2014 and 2019 were retrospectively analyzed RESULTS: Five patients were male and 13 were female. The mean age was 40.3±11.7 years. The most common symptom was the persistence of reflux symptoms (61.2%). Indications for revisional surgery were recurrent hiatal hernia in 10 patients, thightness in 4 patients, mesh migration in 2 patients, mesh migration with recurrent hiatal hernia in 1 patient, and mesh migration with thightness in 1 patient. The mean operative time was 107.2+29.2 minutes. The median hospital stay was 2.9 days (range: 1-6 days). The most common surgical procedure performed was the repair of hiatal crura with mesh, and reconstruction of fundoplication and fixation of neo-fundoplication to the right crus (44.4%). In addition, other surgical procedures performed were takedown of the previous fundoplication (16.6%), takedown of the previous fundoplication and reconstruction of fundoplication (11.1%), cruroplasty and fundoplication with gastric wedge resection (11.1%), removal of the mesh and takedown of the previous fundoplication (5.6%), removal of sutures from the hiatal crura (5.6%), and gastric wedge resection (5.6%). Four patients (27.8%) developed morbidity due to gastric perforation and pleural opening during these procedures. The median follow-up period was 29 months (range: 6-69 months). Two cases (11.1%) who underwent revisional surgery failed, and re-revisional surgery was performed. CONCLUSIONS: Revisionary surgical procedures performed for failed anti-reflux surgery are not limited to re-fundoplication. Different procedures such as takedown of the previous fundoplication, reconstruction of fundoplication, removal of the mesh, removal of the sutures or wedge resection may be necessary. These procedures can successfully be performed laparoscopically by experienced surgeons in well-equipped centers. KEY WORDS: Fundoplication, Gastroesophageal reflux, Laparoscopy, Revisional Surgery, Antireflux surgery.

Laparoscopic versus open complete meso-colic excision for right-sided colon cancer. Analysis of short-term outcomes.

SCOPO DELLO STUDIO: L'emicolectomia destra per escissione mesocolica completa (EMC) laparoscopica mostrerebbe benefici comparabili a breve termine, nonché esiti patologici e oncologici per la chirurgia a cielo aperto. Lo scopo di questo studio era di confrontare la tecnica laparoscopica e la EMC aperta per i tumori del colon sul lato destro in termini di campioni patologici e risultati a breve termine. MATERIALE E METODI: I dati dei pazienti sottoposti a EMC laparoscopica (n=31) e EMC aperto (n=35) per adenocarcinoma del colon destro tra gennaio 2016 e giugno 2019 sono stati analizzati retrospettivamente. Sono stati confrontati dati demografici, parametri preoperatori, peroperatori e postoperatori e campioni di patologia dei due gruppi. RISULTATI: Non ci sono state differenze statistiche tra il gruppo laparoscopico di EMC e il gruppo aperto di EMC in termini di età, sesso, indice di massa corporea, posizione del tumore, punteggio dell'American Society of Anesthesiologists (ASA), presenza di comorbidità, storia di altre neoplasie e precedente chirurgia addominale (p>0,05). I pazienti nel gruppo EMC laparoscopico presentavano lunghezze d'incisione più brevi, tempi operativi più lunghi, minore perdita di sangue operativa, tempi di mobilizzazione più brevi, recupero precoce del movimento intestinale, tempo più breve per dieta leggera, durata ridotta della degenza e dimensioni del tumore più piccole (p<0,05). Il numero medio di linfonodi raccolti in gruppi laparoscopici e di EMC aperti non era statisticamente significativo (29,83+8,90 e 31,34+13,10, rispettivamente). Non ci sono state differenze statistiche in termini di lunghezza del campione tra i gruppi laparoscopici e aperti di EMC (35,19+9,8 cm e 32,71+11,12 cm, rispettivamente). Il tasso di complicanze postoperatorie di 30 giorni era più elevato nel gruppo EMC aperto (35,5% contro 42,9%, rispettivamente), ma non statisticamente significativo (p>0,05). CONCLUSIONI: Patologici (lunghezze dei campioni, lunghezze dei margini di resezione, numero di linfonodi e resezione R0) e risultati a breve termine del gruppo laparoscopico di EMC erano comparabili. Inoltre, la EMC laparoscopica ha conferito benefici a breve termine in termini di lunghezze di incisione più brevi, minore perdita di sangue operativa, riduzione dei tempi di mobilizzazione, recupero precoce dei movimenti intestinali, minor tempo di dieta leggera e riduzione della durata della degenza ospedaliera. Sulla base di questi risultati, la EMC laparoscopica può essere considerata come un approccio elettivo di routine per il carcinoma del colon destro.

The effect of anorectal manometric examination on the surgical treatment plan in chronic anal fissure.

INTRODUCTION: Although lateral internal sphincterotomy (LIS) is the most preferred surgical treatment for chronic anal fissure, In this study, we aimed to investigate the effect of preoperative anorectal manometry on surgical treatment choice in patients presenting with anal fissure. MATERIAL AND METHODS: Between January-2015 and August-2017 and whose physical examination revealed chronic anal fissure findings were included in the study. Patients were divided into two groups as Group 1 LIS and Group 2 non-LIS. In addition to the demographic characteristics of the patients, anal manometry findings and its effect on surgical treatment options were examined. RESULTS: 20 patients (M/F:13/7) were included in the study. The mean age was 48.3+17.4 in Group 1 and 45.25 +24.45 in Group 2 (p:0.797). In the preoperative manometric examination, resting pressure(mmHg) range was 93.2+15.9 in Group 1, and44+11.2 in Group 2 (30-57) (p:0.001). Endurance to squeezing time was shorter in Group 2 (p:0.0138). There were no differences between the groups in terms of mean squeezing pressure, rectal sensation, and rectoanal inhibitor reflex (p>0.05). Of the four patients with low sphincter pressures, 3 underwent botulinum toxin injection and 1 underwent advancement flap instead of LIS. There was no significant difference between preoperative and postoperative CCFI scores in the LIS group (0.6±1.8 vs. 1.2±1.85, p>0.05). CONCLUSION: In the treatment of chronic anal fissure, non-LIS methods were selected in 20% of the patients with the help of preoperative anal manometric examination. Manometric examination is important to minimize the risk of incontinence and to determine the choice of treatment correctly. KEY WORDS: Anal fissure, Anal incontinence, Anal manometry.

Laparoscopic versus open total radical gastrectomy for advanced gastric cancer: surgical outcomes.

AIM: The aim of this study is to compare the oncologic efficacy of laparoscopic total gastrectomy (LTG) versus open total gastrectomy (OTG) for gastric cancer and to provide our experiences regarding this surgery. METHODS: A total of 107 patients who underwent curative total gastrectomy for gastric adenocarcinoma between September 2015 and September 2018 were included in this study. Demographic characteristics, operative parameters, histopathological results, postoperative morbidity and mortality results of the patients were evaluated. RESULTS: Of 107 patients, 70 were men and 37 women. OTG consisted of 89 patients and LTG consisted of 18 patients. The mean age in OTG was 59.4 years, the mean age in LTG was 57.3 years. The mean number of lymph nodes harvested was 30.5 14.6 in OTG and 33.0 10.1 in LTG. The number of metastatic lymph nodes harvested was 7.4 10.5 in OTG and 10.0 11.8 in LTG (p= 0.366), and there was no statistical difference between the two groups. The time of onset of oral intake, anastomotic leakage, and postoperative mortality was similar in both groups. Operative duration and length of hospital stay were significantly higher in LTG. Postoperative survival duration was similar in both procedures CONCLUSION: Laparoscopic total gastrectomy for gastric cancer is an oncologically safe procedure but had a longer operation time and a longer hospital stay. There was no significant difference number of harvested lymph nodes, number of metastatic lymph nodes, and tumor localization between the two groups KEY WORDS: Gastric cancer, Laparoscopy, Gastrectomy.

Evaluation of factors related to Clavien Dindo 3 and above complications in patients undergoing gastrectomy due to gastric cancer.

AIM: In our study, we aimed to evaluate the complications after total gastrectomy by Clavien-Dindo classification and to determine the related risk factors. METHODS: Patients who underwent total gastrectomy due to gastric cancer between 2015-2019 were included in the study. Patients were divided into two groups according to postoperative complication classification Clavien Dindo, those with 3 or higher were Group 1 and the others were Group 2. Demographic and clinical features, laboratory parameters, tumor characteristics, postoperative results and mean survival were compared in the groups. Risk factors for Clavien Dindo 3 and above were analyzed by univariate analysis and multivariate logistic regression analysis. RESULTS: A total of 104 patients participated in our study. Group1 consisted of 25 and Group2 consisted of 79 patients. Male sex was high in both groups (52% vs67.1%, p:0.130). BMI (26 vs 23, p:0.023), albumin (3.24 vs 3.51, p:0,040), postoperative mortality (%28vs% 2.5, p:0.001), postoperative duration of hospitalization (17.60vs9.25 days, p:0.000) were different between the groups, but total survival (month) was not statistically significantly different (19.60vs18.53, p:0.377). In multivariate analysis, tumor Stage 3C (OR =0.177,95% CI = (0.067-0.468), p:0.000), operation duration ≥240 min (OR =2.105,95% CI = (1.080-4.100, p:0.029) and application of neoadjuvant treatment (HR =3.026,95%CI =(1.682-5.446), p:0.000) were indepent risk factors DISCUSSION: In conclusion, obesity, hypoalbuminemia, anemia, tumor stage, duration of operation, and taking neoadjuvant therapy were closely related to postoperative complications. Although the development of postoperative complication increased the length of hospitalization and postoperative mortality, it did not decrease survival in the long term. KEY WORDS: Gastric cancer, Postoperative complication, Total gastrectomy.

The importance of anorectal physiology tests in clinical diagnosis and treatment.

AIM: In this study, we aimed to convert subjective findings to objective findings and to determine the effect of anorectal physiology tests on the diagnosis and treatment of patients with defecatory complaints. MATERIAL AND METHOD: Two hundred and forty patients who applied to the proctology unit between January 2015 and August 2017 were included in our study. The patients were divided into 3 groups based on their presentation complaints; Group 1: Obstructive defecation syndrome(ODS), Group 2: Peroperative except anal incontinence and control after sphincter repair, Group 3: Anal incontinence.Group 2 and Group 3 were divided into subgroups. The demographic data of the patients were retrospectively analyzed. The number of anorectal physiological tests in groups and the rates of referral to surgical or medical treatment were evaluated. FINDINGS: Two hundred and forty patients were included in our study. The highest mean age was in Group 3 (46.2±17.8) (p: 0.356) 43.3% of the patients in our study were female. Anorectal manometry was performed in all patients. Endoanal USG was most commonly performed in Group 2 (42.6%, p:0.013), defecography in Group 1 (47.4%, p: 0.0001), and EMG in Group 3(25.3%, p: 0,001). In Group 1, 33% of the patients with pathological defecography findings had surgical treatment (p<0.05). In Group 2a, the rate of surgical treatment was higher in patients who underwent anal USG with anorectal manometry (%25.6vs %40). In Group 3, the rate of surgical treatment was higher in patients who underwent anal ultrasound with manometry (%1.9 vs %32.6 p<0.005) DISCUSSION: Anorectal physiological tests are important for accurate diagnosis and treatment planning. The combined use of anorectal physiological tests in anal incontinence groups increased the rate of referral to surgical treatment.

Laparoscopic versus open total radical gastrectomy for advanced gastric cancer: surgical outcomes.

AIM: The aim of this study is to compare the oncologic efficacy of laparoscopic total gastrectomy (LTG) versus open total gastrectomy (OTG) for gastric cancer and to provide our experiences regarding this surgery. METHODS: A total of 107 patients who underwent curative total gastrectomy for gastric adenocarcinoma between September 2015 and September 2018 were included in this study. Demographic characteristics, operative parameters, histopathological results, postoperative morbidity and mortality results of the patients were evaluated. RESULTS: Of 107 patients, 70 were men and 37 women. OTG consisted of 89 patients and LTG consisted of 18 patients. The mean age in OTG was 59.4 years, the mean age in LTG was 57.3 years. The mean number of lymph nodes harvested was 30.5±14.6 in OTG and 33.0±10.1 in LTG. The number of metastatic lymph nodes harvested was 7.4±10.5 in OTG and 10.0±11.8 in LTG (p= 0.366), and there was no statistical difference between the two groups. The time of onset of oral intake, anastomotic leakage, and postoperative mortality was similar in both groups. Operative duration and length of hospital stay were significantly higher in LTG. Postoperative survival duration was similar in both procedures CONCLUSION: Laparoscopic total gastrectomy for gastric cancer is an oncologically safe procedure but had a longer operation time and a longer hospital stay. There was no significant difference number of harvested lymph nodes, number of metastatic lymph nodes, and tumor localization between the two groups KEY WORDS: Gastric cancer, Laparoscopy, Gastrectomy.

Giant pedunculated colonic lipoma causing colo-colic intussusception in a patient with mechanical ileus.

A giant colonic lipoma causing colo-colonic intussusception is extremely rare in adults. A 35-year-old woman visited our emergency room with abdominal pain, abdominal distension, nausea and vomiting. Physical examination showed a painful distended abdomen. Abdominal computed tomography revealed that there was a soft-tissue mass with a fat density of approximately 6 cm in diameter in the distal part of the transverse colon. Since the clinical presentation was that of a mechanical ileus, a laparotomy was performed. An intussusception was detected in the transvers colon. A soft and mobile mass was palpated in the transverse colon. Therefore, an extended right hemicolectomy with ileo-transversostomy was performed. Pathological examination revealed a giant pedunculated lipoma of 7 cm in diameter with no evidence of malignancy. Colonic lipomas are the third most common benign pathology seen in the colon. They are more common in women with a peak incidence between 50 and 60 years of age. The most common site of lipomas in the large bowel is the right hemicolon. Colonic lipomas are usually asymptomatic but may cause bleeding, obstruction, intussusception, or abdominal pain. Colonic lipoma causing colo-colic intussusception is extremely rare in the current literature. Surgical approach remains the treatment of choice for giant colonic lipomas. A colonic lipoma causing colo-colic intussusception should be considered in the differential diagnosis of mechanical bowel obstruction. The most important factor for establishing the diagnosis of intussusception caused by a colonic lipoma is awareness of the possibility, especially in adult patients with abdominal symptoms and episodes of intestinal obstruction. KEY WORDS: Colon, Lipoma, Colonic lipoma, Intussusception, Intestinal obstruction, Ileus.