Cancer risk-reducing surgery: Brazilian society of surgical oncology guideline part 1 (gynecology and breast).

BACKGROUND: Risk-reducing operations are an important part of the management of hereditary predisposition to cancer. In selected cases, they can considerably reduce the morbidity and mortality associated with cancer in this population. OBJECTIVES: The Brazilian Society of Surgical Oncology (BSSO) developed this guideline to establish national benchmarks for cancer risk-reducing operations. METHODS: The guideline was prepared from May to December 2021 by a multidisciplinary team of experts to discuss the surgical management of cancer predisposition syndromes. Fourteen questions were defined and assigned to expert groups that reviewed the literature and drafted preliminary recommendations. Following a review by the coordinators and a second review by all participants, the groups made final adjustments, classified the level of evidence, and voted on the recommendations. RESULTS: For all questions including risk-reduction bilateral salpingo-oophorectomy, hysterectomy, and mastectomy, major agreement was achieved by the participants, always using accessible alternatives. CONCLUSION: This and its accompanying article represent the first guideline in cancer risk reduction surgery developed by the BSSO, and it should serve as an important reference for the management of families with cancer predisposition.

Breast cancer in Brazil: Screening program and surgical approach.

BACKGROUND: Screening mammography for breast cancer (BC) is a current strategy that reduces the mortality of BC by up to 30 %. Although mastectomy has been an important component of treatment for decades, conservative surgery (lumpectomy) has become the gold-standard approach for most cases, yet it depends on early detection of the BC. METHODS: This was an epidemiological study performed through DATASUS (2010-2018). We evaluated the temporal trend of screening mammograms, deaths from BC, and surgical procedures at national, regional and state levels. Statistical analysis was performed on VassarStat®-Website for Statistical Computation (Vassar College, New York, USA) and the R-software (R Foundation, v.4.0.3). RESULTS: During 2010-2018 there were 67,392 oncological mastectomies and 48,567 lumpectomies in Brazil's health system. Mastectomies decreased in the Northeast (-3.67 % ± 0.43 per year) and in Bahia state (-3.58 % ± 0.24 per year). Lumpectomies increased in Brazil (median 2.19 (-9.6 to 20.96)), the Northeast (median -12.07 (-25.8 to 9.43)) and Bahia (median 0.16 (-29.1 to 1.9)). Also, screening mammograms increased in Brazil (3.29 % ± 0.43), the Northeast (6.36 % ± 0.49) and Bahia (5.51 % ± 0.31), with 35,317,728 exams during this period. Deaths from BC increased annually in Brazil (+4.13 % ± 0.86), the Northeast (+4.76 % ± 1.45) and Bahia (+5.65 % ± 0.83). CONCLUSION: The number of mammograms related to the screening program increased in the years 2010-2018 in Brazil. Furthermore, we identified an increase in lumpectomies as opposed to mastectomies, and this approach is associated with a reduction in hospitalization days by almost a half, which in turn might result in a cost decrease and probably an earlier return to work.

Intraoperative imprint cytology versus histological diagnosis for the detection of sentinel lymph nodes in breast cancer treated with neoadjuvant chemotherapy.

OBJECTIVES: To compare imprint cytology and paraffin section histology for sentinel lymph node detection in women with breast cancer treated with neoadjuvant chemotherapy. METHOD: A cross-sectional study and report of the sentinel lymph node statuses of 64 patients with breast cancer who underwent intraoperative imprint cytology and neoadjuvant chemotherapy in a referral cancer institute in Rio de Janeiro, Brazil, between 2014 and 2016. RESULTS: The mean age was 51 years. The most common histological type was invasive ductal carcinoma (93.75%), and the most common differentiation grade was 2 (62.5%). Overall, 153 lymph nodes were identified, with a mean of 2.39/case. Thirty-four lymph nodes tested positive for malignancy by imprint cytology, and 55 tested positive by histology. Of the 55 positive lymph nodes, 41 (74.5%) involved macrometastases, and 14 (25.5%) involved micrometastases. There were 21 false negatives with imprint cytology, namely, 7 for macrometastases and 14 for micrometastases, resulting in a rate of 17.6%. The sensitivity of imprint cytology was 61.8%, with a specificity and positive predictive value of 100%, a negative predictive value of 82.4% and an accuracy of 86.3%. The method presented null sensitivity for the identification of micrometastases. CONCLUSIONS: The false-negative rate with imprint cytology was associated with the number of sentinel lymph nodes obtained. The rate found for complete response to neoadjuvant chemotherapy was comparable to the rates reported in the literature. The accuracy of imprint cytology was good, and its specificity was excellent for sentinel lymph node detection; however, the method was unable to detect lymph node micrometastases.

Intraoperative imprint cytology versus histological diagnosis for the detection of sentinel lymph nodes in breast cancer treated with neoadjuvant chemotherapy

OBJECTIVES: To compare imprint cytology and paraffin section histology for sentinel lymph node detection in women with breast cancer treated with neoadjuvant chemotherapy. METHOD: A cross-sectional study and report of the sentinel lymph node statuses of 64 patients with breast cancer who underwent intraoperative imprint cytology and neoadjuvant chemotherapy in a referral cancer institute in Rio de Janeiro, Brazil, between 2014 and 2016. RESULTS: The mean age was 51 years. The most common histological type was invasive ductal carcinoma (93.75%), and the most common differentiation grade was 2 (62.5%). Overall, 153 lymph nodes were identified, with a mean of 2.39/case. Thirty-four lymph nodes tested positive for malignancy by imprint cytology, and 55 tested positive by histology. Of the 55 positive lymph nodes, 41 (74.5%) involved macrometastases, and 14 (25.5%) involved micrometastases. There were 21 false negatives with imprint cytology, namely, 7 for macrometastases and 14 for micrometastases, resulting in a rate of 17.6%. The sensitivity of imprint cytology was 61.8%, with a specificity and positive predictive value of 100%, a negative predictive value of 82.4% and an accuracy of 86.3%. The method presented null sensitivity for the identification of micrometastases. CONCLUSIONS: The false-negative rate with imprint cytology was associated with the number of sentinel lymph nodes obtained. The rate found for complete response to neoadjuvant chemotherapy was comparable to the rates reported in the literature. The accuracy of imprint cytology was good, and its specificity was excellent for sentinel lymph node detection; however, the method was unable to detect lymph node micrometastases.

Convulsión afebril benigna asociada a gastroenteritis por rotavirus / Afebrile benign seizures associated to rotavirus gastroenteritis

Introducción: el rotavirus, es la principal causa de gastroenteritis en niños menores de 3 años de edad. Se han publicado reportes en los cuales describen estas gastroenteritis asociadas a convulsiones generalizadas, afebriles, benignas. Esta convulsión se presenta con deshidratación leve y sin desequilibrio hidroelectrolítico. Es una entidad bien conocida en Asia pero muy poco reportada en el resto del mundo.Caso clínico: lactante varón de 1 año y 2 meses de edad que acude por presentar convulsión tónica asociado a una gastroenteritis por rotavirus. La crisis fue autolimitada y de evolución benigna.Conclusión: la entidad no se presenta exclusivamente en Asia y es probable que en nuestro medio sea mas frecuente pero subdiagnosticada.

Introduction: Rotavirus is the main cause of gastroenteritis in children under 3 years of age. Some reports have been published, describing cases of gastroenteritis associated to afebrile benign generalized seizures. These seizures occurring with mild dehydration and with no hydroelectrolytic imbalance have been frequently described in Asia, but they have rarely been reported in the rest of the world.Case report: A 1-year and two-months old male infant presented with tonic seizures associated with rotavirus gastroenteritis. The episode was self-limited and with a good outcome up to now. This condition is not exclusive to Asia and it may even be more frequent in our environment but misdiagnosed. Conclusion: to organization one does not appear exclusively in Asia and it is probable that in our means but frequent but it is subdiagnosed.