Obesity may not be related to pathologic response in locally advanced rectal cancer following neoadjuvant chemoradiotherapy.

Background: The aim of this study is to evaluate the correlation between body mass index (BMI) and body fat composition (measured with radiological fat parameters (RFP)) and pathological response after neoadjuvant chemoradiotherapy for locally advanced rectal cancer patients. The secondary aim of the study was to assess the role of BMI and RFP on major surgical complications, overall survival (OS), and disease-free survival (DFS). Methods: All patients who underwent surgical resection following nCRT between 2005 and 2017 for mid-low rectal cancer were retrospectively collected. Visceral fat area (VFA), superficial fat area (SFA), visceral/superficial fat area ratio (V/S), perinephric fat thickness (PNF), and waist circumference (WC) were estimated by baseline CT scan. Predictors of pathologic response and postoperative complications were investigated using logistic regression analysis. The correlations between BMI and radiologic fat parameters and survival were investigated using the Kaplan-Meier method and log-rank test. Results: Out of 144 patients included, a complete (TRG1) and major (TRG1+2) pathologic response was reported in 32 (22%) and 60 (45.5%) cases, respectively. A statistically significant correlation between BMI and all the RFP was found. At a median follow-up of 60 (35-103) months, no differences in terms of OS and DFS were found considering BMI and radiologic fat parameters. At univariable analysis, neither BMI nor radiologic fat parameters were predictors of complete or major pathologic response; nevertheless, VFA, V/S>1, and BMI were predictors of postoperative major complications. Conclusions: We found no associations between BMI and body fat composition and pathological response to nCRT, although VFA, V/S, and BMI were predictors of major complications. BMI and RFP are not related to worse long-term OS and DFS.

Could the Pittsburgh Severity Score guide the treatment of esophageal perforation? Experience of a single referral center.

BACKGROUND: Esophageal perforation (EP) is characterized by high morbidity and mortality. The Pittsburgh Severity Score (PSS) is a scoring system based on clinical factors at the time of EP presentation, intended to guide treatment. The aim of the study is to verify PSS usefulness in stratifying EP severity and in guiding clinical decisions. METHODS: All patients referred to our unit for EP between January 2005 and January 2020 were enrolled. Patients were stratified according to their PSS into three groups (PSS ≤ 2, 3-5, and >5): the postoperative outcomes were compared. The predictive value of the PSS was evaluated by simple linear and logistic regression for the following outcomes: need for surgery, complications, in-hospital mortality, intensive care unit (ICU) and hospital stay, time to refeeding, and need for reintervention. RESULTS: Seventy-three patients were referred for EP (male/female, 46/27). Perforations were more frequently iatrogenic (41.1%) or spontaneous (38.3%). The median PSS was 4 (interquartile range, 2-6). Surgery was required in 60.3% of cases. Pittsburgh Severity Score was associated with ICU admission, hospital stay, need for surgery and reintervention, postperforation complications and mortality. After regression analysis, PSS was significantly predictive of postperforation complications (p < 0.01), in-hospital mortality (p = 0.01), ICU admission (p < 0.01), need for surgical treatment (p < 0.01), and need for reintervention (p = 0.02). CONCLUSION: Pittsburgh Severity Score is useful in stratifying patients in risk groups with different morbidity and mortality. It is also useful in guiding the therapeutic conduct, selecting patients for nonoperative management. Prospective studies are needed to confirm the role of the PSS in the treatment of esophageal perforation. LEVEL OF EVIDENCE: Management, Therapeutic/Care; level IV.

Simple mucinous cyst: another potential cancer precursor in the pancreas? Case report with molecular characterization and systematic review of the literature.

Cystic lesions of the pancreas may range from benign to precursors of pancreatic cancer. Simple mucinous cyst (SMC) is larger than 1 cm, has a gastric-type flat mucinous lining, and minimal atypia without ovarian-type stroma. We report a new case of pancreatic SMC, coupling a systematic review of the English literature mainly focused on their clinic-pathological features. We reviewed 103 cases of SMC in adults (73 women), averaging 57 (range, 26-70) years. The SMCs were located in the body-tail region of the pancreas in 60 (58%) cases, presenting as single cystic lesions in 94% of cases; 43% of patients were asymptomatic. A preoperative fine-needle aspiration of the cyst fluid detected amylase and carcinoembryonic antigen positivity in 71% and 76% of cases, respectively. Patients underwent surgery mostly for suspected malignancy; in 83% of cases, a standard pancreatic resection was performed. Mean SMC size was 4.9 (range, 1.5-12.0) cm. Mucins MUC5AC and MUC6 resulted positive in 77% and 81% of cases performed, respectively, whereas MUC2 was negative in all but one patient. The SMC from our institution was characterized by a KRAS somatic mutation. The diagnosis of SMC should be considered when a solitary pancreatic cyst larger than 1 cm is detected in asymptomatic patients. To establish a correct diagnosis, an extensive histologic/immunohistochemical analysis is essential. The presence of a KRAS mutation highlights that SMC may represent another potential pancreatic cancer precursor.

Burn Unit admission and management protocol during COVID-19 pandemic.

BACKGROUND: The actual epidemic outbreak is the third time in the last two decades in which a coronavirus results in a major global spread with serious consequences in terms of vastity of affected patients, life losses, health system organization efforts and socio-economic implications. Lacking effective therapies and vaccinations, during viral outbreak the major and most incisive mean for viral spread control is spread prevention, especially for the fragile burn-injured patients we are called to care for in Burn Units. METHODS: We developed an admission and inpatient management protocol to preserve burn patients from SARS-CoV-2 contagion, in order to avoid additional morbidity and mortality in patients with already compromised health conditions. Data from burn-injured patients admitted to our Unit following this new protocol were retrospectively analyzed in order to verify its effectiveness in prevention of viral spread. RESULTS: From the 8th of March to the 8th of June, we admitted 18 patients in the Burn Unit ICU and semi-ICU and 17 patients in the Burn Ward. Two of them resulted positive to COVID-19 nasopharyngeal swab and bronchoalveolar lavage collected immediately on admission, for both the extension of burns and their general clinical conditions implied ICU admission. Moreover, a caregiver of an admitted child resulted positive to the nasopharyngeal swab. No other cases of SARS-CoV-2 positivity have been reported neither between hospitalized patients nor between healthcare workers. CONCLUSION: The evidence of high ICU admission rate and high mortality in patients affected by SARS-CoV-2 combined with the fragile clinical conditions of burn patients required the development of an admission and hospitalization management protocol.

Histopathology and Long-Term Outcome of Kidneys Transplanted From Donors With Severe Acute Kidney Injury.

BACKGROUND: Acute kidney injury is a treatable entity although difficult to recognize without diagnostic biopsy. We investigated the potential association between clinically defined deceased donors and acute kidney injury with preimplantation histological findings and recipient outcomes. METHODS: Kidney biopsies from donors were classified using the Acute Kidney Injury Network criteria and assessed for percentage glomerulosclerosis, tubular atrophy, interstitial fibrosis, and vascular narrowing with the Remuzzi score and for acute tubular necrosis. Differences in incidence rates of delayed graft function (DGF) and cumulative rejection episodes were compared between recipients transplanted with normal and 3 levels of acute kidney injury using the analysis of variance with Bonferroni correction ( P = .0012). RESULTS: Sixteen out of 335 donors showed a severe acute kidney injury level 3 with a median serum creatinine of 458 µmol/L. Fourteen (88%) had 0-3 Remuzzi score and were used for single kidney transplantation and 2 (12%) were used for dual kidney transplantation (score: 4-6). Recipients who received a kidney from a donor with level 3 acute kidney injury had a higher percentage of DGF (47%) without statistical significance ( P = .008). The rate of cumulative rejection (45%) at 2 years was not significantly increased ( P = .09). CONCLUSIONS: Recipients receiving level 3 acute kidney injury kidneys, selected with Remuzzi histopathological score and acute tubular necrosis assessment, had a greater incidence of DGF but a similar long-term cumulative rejection compared to no injury and level 1 and level 2 acute kidney injury donors. The application of the histopathological examination allowed expansion of the kidney donor pool.

Tracheobronchopathia Osteochondroplastica: A Case Report Illustrating the Importance of Multilevel Workup Clinical, Endoscopic and Histological Assessment in Diagnosis of an Uncommon Disease.

BACKGROUND Tracheobronchopathia osteochondroplastica (TO) is a rare idiopathic disease with a stable course, which involves the lumen of the tracheobronchial tree. Clinical manifestations at time of presentation may differ, typically including hoarseness, persistent and/or productive cough, hemoptyses, and dyspnea. There are no well-established guidelines for diagnostic workup and treatment. Our aim here is to present a paradigmatic case of TO together with a concise survey of the most important clinical, radiological, and histological criteria. CASE REPORT We report a case of a 62-year-old non-smoker male with persisting cough and no prior history of respiratory disease. Chest radiography (RX) and computed tomography (CT) were unremarkable. Given the persistence of symptoms, the patient underwent bronchoscopic examination, which revealed protruding sessile nodules into the tracheal lumen, with cobblestone appearance. Histopathological examination of biopsies taken during bronchoscopy showed cartilaginous and osseous submucosal nodules consistent with the diagnosis of TO. CONCLUSIONS TO is not always an easily recognized disease, and a multidisciplinary team work is often required for diagnosis, with particular importance of endoscopic-pathological correlation.

How safe are organs from deceased donors with neoplasia? The results of the Italian Transplantation Network.

Guidelines for donor selection have changed to expand the donor pool, considering potential donors affected by a neoplasm. Aim of this retrospective study is to look at the use of organs from donors with a current or history of neoplasm within the Italian Transplant Network. Data, collected and validated by Italian National Health Institute for the time interval 2006-2015, have been reviewed retrospectively by mean of multivariable pivot tables. Donors with neoplasia represented about 5% of all donors, resulting in about 4% of all transplants. Donors presented a benign neoplasm in 29.08% of cases, a malignancy with variable risk of transmission in 69.75% while in 1.34% the nature of neoplasm could not be assessed. Considering all procedures, rate of transmission of a malignancy was 0.03% (10 cases) of all 29858 transplants of the time interval. Notably, cases of transmission were not from donors of this pool, but from donors that, according to our protocols, had no elements of suspect at time of donation. As recipient safety is always the priority and as guidelines have set exclusion criteria for donors with some specific types of malignancy, these results show that use of this type of donors is safe and improve organ pool. Furthermore represent basis for improvement and standardization of donor assessment protocols suggesting that efforts in data collection systems, to produce complete and homogeneous data, are mandatory.

Pulmonary Fat Embolism and Coronary Amyloidosis.

BACKGROUND Fat embolism syndrome is a well-known complication in orthopedic and trauma surgery, caused by a massive release of fat into the circulation that can lead to cardiopulmonary insufficiency and multiorgan failure. CASE REPORT We present the case of a 72-year-old man with osteoarthritis who underwent an elective right cementless total hip arthroplasty. Two hours after surgery, the patient lost consciousness and was found hypotensive and with reduced oxygen saturation, with a severe right heart dilatation at echocardiographic evaluation. Death occurred after cardiopulmonary resuscitation attempts. Post-mortem microscopic examination revealed that the final cause of death was pulmonary fat embolism associated with coronary amyloidosis and atherosclerosis. CONCLUSIONS This case called our attention on the sudden onset of fat embolism syndrome after arthroplasty and the insidious nature of amyloidosis infiltrative disease. The autopsy findings substantially aided understanding the immediate cause of death.