EARLY POSTOPERATIVE OUTCOMES OF THE ESOPHAGECTOMY MINIMALLY INVASIVE IN ESOPHAGEAL CANCER.

Background: The incidence of esophageal cancer is high in some regions and the surgical treatment requires reference centers, with high volume, to make surgery feasible.

Aims: To evaluate patients undergoing minimally invasive esophagectomy by thoracoscopy in prone position for the treatment of esophageal cancer and to recognize the experience acquired over time in our service after the introduction of this technique.

Methods: From January 2012 to August 2021, all patients who underwent the minimally invasive esophagectomy for esophageal cancer were retrospectively analyzed.

Brazilian Society of Surgical Oncology consensus on fertility-sparing surgery for cervical cancer.

Objective: Several controversies remain on conservative management of cervical cancer. Our aim was to develop a consensus recommendation on important and novel topics of fertility-sparing treatment of cervical cancer.

Methods: The consensus was sponsored by the Brazilian Society of Surgical Oncology (BSSO) from March 2020 to September 2020 and included a multidisciplinary team of 55 specialists.

Open Versus Minimally Invasive Radical Hysterectomy in Cervical Cancer: The CIRCOL Group Study.

Purpose: To analyze the survival outcomes of patients in a Brazilian cohort who underwent minimally invasive surgery (MIS) compared with open surgery for early stage cervical cancer.

Methods: A multicenter database was constructed, registering 1280 cervical cancer patients who had undergone radical hysterectomy from 2000 to 2019. For the final analysis, we included cases with a tumor ≤ 4 cm (stages Ia2 to Ib2, FIGO 2018) that underwent surgery from January 2007 to December 2017.

Mast Cells and Proteins Related to Myofibroblast Differentiation (PAR-2, IL-6, and TGFβ1) in Salivary Cancers: A Preliminary Study.

Salivary gland neoplasms represent an important group of cancers in the head and neck and myoepithelial cells play a key role on the development these tumors. This study evaluated the distribution of mast cells and related proteins (PAR-2, TGFβ1, IL-6) to the myofibroblastic differentiation in malignant tumors of salivary glands with and without myoepithelial differentiation. Immunohistochemical assessement for tryptase mast cells, SMA, PAR-2, TGFβ1, IL-6 was performed in 10 cases of polymorphous low-grade adenocarcinoma, 14 cases of mucoepidermoid carcinoma (MEC) and 10 cases of adenoid cystic carcinoma.

Brazilian Society of Surgical Oncology guidelines for surgical treatment of endometrial cancer in regions with limited resources.

Background: Approximately 70% of cancer-related deaths occur in low- and middle-income countries. In addition to social and racial inequalities, treatment options in these countries are usually limited because of the lack of trained staff and equipment, limited patient access to health services, and a small number of clinical guidelines.

Objectives: The Brazilian Society of Surgical Oncology developed this guideline to address these barriers and guide physicians treating patients with endometrial cancer (EC) in regions with limited resources and few specialized centers.

Definition of the Rectum: An International, Expert-based Delphi Consensus.

Background: The wide global variation in the definition of the rectum has led to significant inconsistencies in trial recruitment, clinical management, and outcomes. Surgical technique and use of preoperative treatment for a cancer of the rectum and sigmoid colon are radically different and dependent on the local definitions employed by the clinical team. A consensus definition of the rectum is needed to standardise treatment.

Surgery in ovarian cancer - Brazilian Society of Surgical Oncology consensus.

Unlabelled: Surgical management in epithelial ovarian cancer (EOC) has a significant impact in overall survival and progression-free survival. The Brazilian Society of Surgical Oncology (BSSO) supported a taskforce of experts to reach a consensus: experienced and specialised trained surgeons, in cancer centres, provide the best EOC surgery. Laparoscopic and/or radiological staging prognosticates the possibility of complete cytoreduction (CC0) and helps to reduce unnecessary laparotomies.

MCM3: A Novel Proliferation Marker in Oral Squamous Cell Carcinoma.

The present study sought to evaluate and compare the immunoexpression of proteins minichromosome maintenance (MCM) 3 and Ki-67 in oral squamous cell carcinoma (OSCC) to assess the potential of these proteins as markers of cellular proliferation. Twenty-eight cases of OSCC, 9 of tumor-free resection margins (TM), and 4 of non-neoplastic oral mucosa (NNM) were subjected to immunohistochemistry to detect the expression of proteins MCM3 and Ki-67. All OSCCs demonstrated positivity for both proteins.

Nutritional assessment in surgical oncology patients: a comparative analysis between methods.

Background And Aims: The malnutrition found in oncology patients is the main responsible for the increase in morbimortality and worsening of their quality of life. Currently, the assessment of malnutrition is performed by subjective and objective methods, or the combination of them. Although these methods are routinely applied and their association is very common in clinical practice, there are few studies on the agreement between them.

Metastases to retroperitoneal or lateral pelvic lymph nodes indicated unfavorable survival and high pelvic recurrence rates in a cohort of 102 patients with low rectal adenocarcinoma.

Background And Objectives: The Japanese protocol considers metastases to retroperitoneal or lateral pelvic lymph nodes (RLPNs) as regional lymphatic dissemination in rectal adenocarcinoma patients and recommends total mesorectal excision (TME) plus retroperitoneal and lateral pelvic lymphadenectomy (RLPL). Western protocols consider RLPN metastases to indicate advanced disease.

Methods: All outcomes were evaluated among a cohort of 102 rectal adenocarcinoma patients subjected to TME plus RLPL with a nerve-preserving technique.

Suggestion of optimal patient characteristics for sentinel lymph node mapping in colorectal adenocarcinoma.

Context: In a previously published study, the variables lower rectal tumor site, preoperative chemoradiotherapy and large tumors were considered as independent risk factors for the inability of sentinel lymph node identification in patients with colorectal adenocarcinoma.

Objectives: To determine if these variables could interfere in the precision and upstaging benefit of sentinel lymph node mapping in colorectal cancer.

Methods: A database composed of 52 patients submitted to lymphatic mapping using technetium-99m-phytate and patent blue was reviewed.

Expression profile of p63 in 127 patients with laryngeal squamous cell carcinoma.

Objectives: To evaluate p63 expression in laryngeal squamous cell carcinoma and its prognostic significance.

Methods: p63 expression was examined by immunohistochemistry and scored in 127 patients with laryngeal squamous cell carcinomas.

Results: Sixty-two cases had scored 3, sixty had scored 2, four had scored 1 and one case did not show any expression (48.

Upstaging benefits and accuracy of sentinel lymph node mapping in colorectal adenocarcinoma nodal staging.

Background And Objectives: Sentinel lymph node (SLN) mapping is an additional method for improving colorectal cancer nodal staging. The purpose of the study was to define the method's accuracy in nodal staging, its upstaging benefits and to identify the predictive factors for its failure.

Methods: Lymphatic mapping was performed using technetium-99m-phytate and patent blue in 52 consecutive colorectal adenocarcinoma patients.