478 Background: Radical cystectomy (RC) with neoadjuvant chemotherapy (NAC) is the standard of care for muscle invasive bladder cancer and has a high rate of complications. Malnutrition is common among RC patients and is an established risk factor for peri-operative complications. The association of NAC and nutritional status and its effect on post-operative complications is not fully understood. We hypothesize that NAC hinders nutritional status and thus increases complication rates after RC. Methods: We retrospectively examined the records of NAC/RC patients. We included demographic, clinical and pathologic data and type and cycle number of NAC. Nutritional status was assessed with the smooth muscle area (SMA) of the psoas muscle at the level of L4 vertebrae measured on cross-sectional imaging. Patients with missing imaging data were excluded. SMA was measured pre and post NAC. The difference between the measurements was used as a predictor variable (delta_SMA). The outcomes assessed were ileus, infection, rehospitalization and a composite outcome of any complication. Results: The study included 50 patients, from 3 high volume centers in Israel. Median delta_SMA was -197 (-366, -88) mm2. Demographic, clinical and pathologic parameters were similar in patients with and without complications. delta_SMA was an independent predictor of ileus (OR = 0.98, p=0.003), peri-operative infection (OR = 0.98, p=0.0015) and any complications (OR = 0.98, p = 0.011) on univariable analysis. Delta_SMA remained an independent predictor of ilieus (OR 0.97, p=0.014), peri-operative infections (OR 0.95, p=0.023) and any complications (OR 0.98, p=0.01) on multivariable regression analysis. Delta_SMA was not a significant predictor of rehospitalization. Conclusions: In patients undergoing RC, NAC causes a measurable nutritional insult. The change in SMA predicts significant peri-operative complications. Future studies should examine the role of nutritional intervention during NAC in the framework of a clinical trial.
Purpose: to evaluate a unique subpopulation of radical prostatectomy (RP) candidates with “negative” prostate 68Ga-labeled prostate-specific membrane antigen (PSMA) positron emission tomography (PET) computed tomography (CT) imaging scans and to characterize the clinical implications of misleading findings. Materials and Methods: This case-control retrospective study compared the final histological outcomes of patients with “negative” pre-RP PSMA PET/CT prostate scans (with a prostate maximal standardized uptake value [SUVmax] below the physiologic uptake) to those with an “intense” prostatic tracer uptake (with a SUVmax above the physiologic uptake). The patients underwent an RP between March 2015 and July 2019 in five academic centers. Data on the demographics, comorbidities, prostate-specific antigen (PSA) and rectal exam findings, prior biopsies, imaging results, biopsies, and RP histology results were collected. Results: Ninety-seven of the 392 patients who underwent an RP had PSMA PET/CT imaging preoperatively. Fifty-two (54%) had a “negative” uptake (in the study group), and 45 (46%) had a “positive” uptake (in the control group). Only the lesion size and SUVmax values on the PSMA PET/CT differed between the groups preoperatively. On the histological analysis, only the ISUP score, seminal vesicles invasion, T stage, and positive margin rates differed between the groups (p < 0.05), while 50 (96%) study group patients harbored clinically significant disease (ISUP ≥ 2), with an extra-prostatic disease in 24 (46%), perineural invasion in 35 (67%), and positive lymph nodes in 4 (8%). Conclusions: Disease aggressiveness generally correlated with an intense PSMA uptake on the preoperative PSMA PET/CT, but a subpopulation of patients with clinically significant cancer and aggressive characteristics showed a deceptively weak PSMA uptake. These data raise a concern about the unqualified application of PSMA PET/CT for staging RP candidates.
DSAEK in the setting of an ACIOL produced similar results to those of uncomplicated PCIOL cases. Although further studies are needed to gain more accurate information on this subject, it seems that DSAEK can be performed while retaining an ACIOL with favorable results.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.