A Case of Local Radiation Injury in the Creation of Lichtenburg Art.

Despite the fact that there may be no immediate outward signs of tissue destruction, the ultimate damage caused by radiation exposure is immediate and may be predicted based on the source, length of exposure, and type of tissue to which the radiation is exposed. Although predictable, difficulty in caring for these patients stems from the multiple sources of radiation to which people may be exposed, the various parts of the body exposed, the dose involved, the rarity of the condition, and a general lack of knowledge on the part of treating physicians. Due to these factors, there is significant variation in treatment recommendations. Additionally, knowledge about how to treat these injuries is limited and often very difficult to access, even among healthcare professionals. This report highlights the first known case of localized radiation injury secondary to the utilization of a linear accelerator to generate Lichtenberg art. In this case, an accident occurred while working with a retired accelerator and led to severe local radiation injury to this patient's bilateral hands, prompting a series of searches and inquiries as to the next best step in management. From consulting clinicians at the Centers for Disease Control and Prevention (CDC) who are experts in managing radiation injury to the eventual need for digit amputation, this case highlights the profound lack of knowledge and accessible resources for clinicians and patients facing localized radiation injury. This is a noninterventional observation case report without the requirement of ethical approval.

The Role of Surgery in Oligometastatic Retroperitoneal Sarcoma.

Retroperitoneal sarcomas are extremely rare, comprising <15% of primary sarcomas. Distant metastasis occurs in about 20% of cases, with pulmonary and hepatic metastasis as the most common sites of hematogenous spread. Although surgical resection is well established as the main treatment of localized primary disease, there are limited guidelines for the surgical treatment of intra-abdominal and distant metastases. There are inadequate systemic treatment options for patients with metastatic sarcoma, thereby necessitating the consideration of surgical options in carefully selected patients. Key points to consider include tumor biology, patient fitness and co-morbidities, overall prognosis, and goals of care. Multidisciplinary sarcoma tumor board discussion for each case is an essential practice in order to deliver the best care to these patients. The purpose of this review is to summarize the published literature on the past and present role of surgery in the treatment of oligometastatic retroperitoneal sarcoma in order to inform the management of this difficult disease.

The effect of marijuana use on short-term outcomes with bariatric surgery.

BACKGROUND: Despite increasing marijuana use nationwide, there are limited data on implications of marijuana use on bariatric surgery outcomes. OBJECTIVE: We investigated associations between marijuana use and bariatric surgery outcomes. SETTING: Multicenter statewide study utilizing data from the Michigan Bariatric Surgery Collaborative, a payor-funded consortium including over 40 hospitals and 80 surgeons performing bariatric surgery statewide. METHODS: We analyzed data from the Michigan Bariatric Surgery Collaborative clinical registry on patients who underwent a laparoscopic sleeve gastrectomy or Roux-en-Y gastric bypass between June 2019 and June 2020. Patients were surveyed at baseline and annually on medication use, depression symptoms, and substance use. Regression analysis was performed to compare 30-day and 1-year outcomes between marijuana users and nonusers. RESULTS: Of 6879 patients, 574 reported baseline marijuana use and 139 reported use at baseline and 1 year. Marijuana users were more likely to be current smokers (14% versus 8%, P < .0001), screen positive for alcohol use disorder (20.0% versus 8.4%, P < .0001), and score higher on the Patient Health Questionnaire-8 (6.1 versus 3.0, P < .0001). There were no statistically significant differences in 30-day outcomes or co-morbidity remission at 1 year. Marijuana users had higher adjusted total mean weight loss (47.6 versus 38.1 kg, P < .0001) and body mass index reduction (17 versus 14 kg/m2, P < .0001). CONCLUSIONS: Marijuana use is not associated with worse 30-day outcomes or 1-year weight loss outcomes and should not be a barrier to bariatric surgery. However, marijuana use is associated with higher rates of smoking, substance use, and depression. These patients may benefit from additional mental health and substance abuse counseling.

Decisional Regret Among Patients Undergoing Colectomy.

BACKGROUND: Patients undergoing colectomy may be at risk for postoperative regret, which is associated with worse quality of life, higher rates of depression, and poorer health outcomes. A better understanding of factors associated with decisional regret may allow surgeons to better tailor preoperative discussions to mitigate the risk of regret. OBJECTIVE: This study aimed to identify factors associated with regret in patients undergoing elective and urgent/emergent colectomy. DESIGN: A retrospective cohort study. SETTING: The Michigan Surgical Quality Collaborative, a 73-hospital collaborative, which collects clinical data on general surgery operations. PATIENTS: Patients aged >18 years who underwent elective or urgent/emergent colectomy between January 2017 and March 2020 and who completed a decision regret survey. MAIN OUTCOME MEASURES: Any degree of postoperative regret. RESULTS: Of 3638 patients, 2,530 (70%) underwent elective and 1108 (30%) underwent urgent/emergent colectomy. Overall, 381 (10.5%) patients reported regret, with higher rates among the urgent/emergent setting compared with the elective cohort (13.0% vs 9.4%; p < 0.001). In the elective cohort, regret was associated with length of stay >7 days (OR, 2.32; 95% CI, 1.06-5.07), postoperative complication (OR, 1.95; 95% CI, 1.36-2.79), and readmission (OR, 1.90; 95% CI, 1.22-2.95). Elective colectomies for cancer/adenoma/polyp were associated with lower odds of regret (OR, 0.68; 95% CI, 0.50-0.91). In the urgent/emergent cohort, regret was associated with female sex (OR, 1.69; 95% CI, 1.15-2.50) and nonhome discharge destination (OR, 1.61; 95% CI, 0.04-1.03). LIMITATIONS: Hospitals used different sampling strategies, limiting our ability to calculate a true response rate and characterize nonresponders. CONCLUSIONS: One in 10 patients reported regret after colectomy with higher rates in those undergoing urgent/emergent colectomy. Factors associated with regret were different between surgical settings. Efforts are needed to mitigate patients' risk of regret with individualized discussions contingent on surgical settings to better align expectations and outcomes. See Video Abstract at http://links.lww.com/DCR/C3 . ARREPENTIMIENTO DEL PACIENTE EN LA DECISIN DE SOMETIMIENTO A COLECTOMA: ANTECEDENTES:Los pacientes que se someten a una colectomía pueden estar en riesgo de arrepentimiento post operatorio, la cual está asociada con una peor calidad de vida, mayores tasas de depresión y peores resultados de salud. Una mejor comprensión de los factores asociados con el arrepentimiento de dicha decisión, puede permitir a los cirujanos adaptar de una mejor manera las discusiones preoperatorias y así mitigar el riesgo de arrepentimiento.OBJETIVO:Identificar factores asociados al arrepentimiento en pacientes sometidos a colectomía electiva y urgente/emergente.DISEÑO:Estudio de cohorte retrospectivo.ESCENARIO:The Michigan Surgical Quality Collaborative, una colaboración de 73 hospitales.PACIENTES:Pacientes ≥18 años sometidos a colectomía electiva o urgente/emergente entre enero de 2017 y marzo de 2020, y que hayan completado una encuesta de arrepentimiento en cuanto a la decisión.PRINCIPALES MEDIDAS DE RESULTADO:Reporte de cualquier grado de arrepentimiento postoperatorio.RESULTADOS:De 3.638 pacientes, 2.530 (70%) fueron sometidos a colectomía electiva y 1.108 (30%) a colectomía urgente/emergente. En general, 381 (10,5%) pacientes informaron arrepentimiento, con tasas más altas en el grupo relacionado con el escenario urgente/emergente en comparación con la cohorte electiva (13,0% frente a 9,4%, p < 0,001). En la cohorte electiva, el arrepentimiento se asoció con una estancia hospitalaria >7 días (OR 2,32, IC 95% 1,06-5,07), complicación posoperatoria (OR 1,95, IC 95% 1,36-2,79) y reingreso (OR 1,90, IC 95% 1,22-2,95). Las colectomías electivas por cáncer/adenoma/pólipo se asociaron con una menor probabilidad de arrepentimiento (OR 0,68, IC 95%: 0,50-0,91). En la cohorte urgente/emergente, el arrepentimiento se asoció con el sexo femenino (OR 1,69, IC 95% 1,15-2,50) y el destino del alta no domiciliario (OR 1,61, IC 95% 0,04-1,03).LIMITACIONES:Los hospitales utilizaron diferentes estrategias de muestreo, lo que limita nuestra capacidad para calcular una tasa de respuesta real y caracterizar a los que no respondieron.CONCLUSIONES:Uno de cada diez pacientes reportó arrepentimiento después de la colectomía con tasas más altas en aquellos sometidos a colectomía urgente/emergente. Los factores asociados con el arrepentimiento fueron diferentes entre los entornos quirúrgicos. Se necesitan esfuerzos para mitigar el riesgo de arrepentimiento de los pacientes con discusiones individualizadas supeditadas al entorno quirúrgico para caracterizar de una mejor las expectativas y los resultados. Consulte Video Resumen en http://links.lww.com/DCR/C3 . (Traducción-Dr. Osvaldo Gauto).

Predicting deliverability of volumetric-modulated arc therapy (VMAT) plans using aperture complexity analysis.

The purpose of this study was to evaluate the ability of an aperture complexity metric for volumetric-modulated arc therapy (VMAT) plans to predict plan delivery accuracy. We developed a complexity analysis tool as a plug-in script to Varian's Eclipse treatment planning system. This script reports the modulation of plans, arcs, and individual control points for VMAT plans using a previously developed complexity metric. The calculated complexities are compared to that of 649 VMAT plans previously treated at our institution from 2013 to mid-2015. We used the VMAT quality assurance (QA) results from the 649 treated plans, plus 62 plans that failed pretreatment QA, to validate the ability of the complexity metric to predict plan deliverability. We used a receiver operating characteristic (ROC) analysis to determine an appropriate complexity threshold value above which a plan should be considered for reoptimization before it moves further through our planning workflow. The average complexity metric for the 649 treated plans analyzed with the script was 0.132 mm-1 with a standard deviation of 0.036 mm-1. We found that when using a threshold complexity value of 0.180 mm-1, the true positive rate for correctly identifying plans that failed QA was 44%, and the false-positive rate was 7%. Used clinically with this threshold, the script can identify overly modulated plans and thus prevent a significant portion of QA failures. Reducing VMAT plan complexity has a number of important clinical benefits, including improving plan deliverability and reducing treatment time. Use of the complexity metric during both the planning and QA processes can reduce the number of QA failures and improve the quality of VMAT plans used for treatment.