Oncological outcomes of visibly complete transurethral resection prior to neoadjuvant chemotherapy for bladder cancer

ABSTRACT Purpose: To evaluate the potential oncologic benefit of a visibly complete transurethral resection of a bladder tumor (TURBT) prior to neoadjuvant chemotherapy (NAC) and radical cystectomy (RC). Materials and Methods: We identified patients who received NAC and RC between 2011-2021. Records were reviewed to assess TURBT completeness. The primary outcome was pathologic downstaging (<ypT2N0), with complete pathologic response (ypT0N0) and survival as secondary endpoints. Logistic regression and Cox proportional hazards models were utilized. Results: We identified 153 patients, including 116 (76%) with a complete TURBT. Sixty-four (42%) achieved <ypT2N0 and 43 (28%) achieved ypT0N0. When comparing those with and without a complete TURBT, there was no significant difference in the proportion with <ypT2N0 (43% vs 38%, P=0.57) or ypT0N0 (28% vs 27%, P=0.87). After median follow-up of 3.6 years (IQR 1.5-5.1), 86 patients died, 37 died from bladder cancer, and 61 had recurrence. We did not observe a statistically significant association of complete TURBT with cancer-specific or recurrence-free survival (p≥0.20), although the hazard of death from any cause was significantly higher among those with incomplete TURBT even after adjusting for ECOG and pathologic T stage, HR 1.77 (95% CI 1.04-3.00, P=.034). Conclusions: A visibly complete TURBT was not associated with pathologic downstaging, cancer-specific or recurrence-free survival following NAC and RC. These data do not support the need for repeat TURBT to achieve a visibly complete resection if NAC and RC are planned.

Oncological outcomes of visibly complete transurethral resection prior to neoadjuvant chemotherapy for bladder cancer.

PURPOSE: To evaluate the potential oncologic benefit of a visibly complete transurethral resection of a bladder tumor (TURBT) prior to neoadjuvant chemotherapy (NAC) and radical cystectomy (RC). MATERIALS AND METHODS: We identified patients who received NAC and RC between 2011-2021. Records were reviewed to assess TURBT completeness. The primary outcome was pathologic downstaging (

Olfactory rehabilitation and olfactory bulb volume changes in patients after total laryngectomy: a prospective randomized study / Reabilitação olfatória e alterações do volume do bulbo olfatório em pacientes pós-laringectomia total: um estudo prospectivo randomizado

Abstract Introduction: After total laryngectomy, decreased olfactory function and olfactory bulb volume shrinkage have been reported to occur due to olfactory deprivation caused by nasal airflow interruption. There is evidence that the olfactory system can be modulated by repeated exposure to odors in a procedure called olfactory training. However, it is not known whether any recovery of the lost olfactory bulb volume is possible by eliminating olfactory deprivation via olfactory rehabilitation long after laryngectomy. Objective: This study examined the recovery of olfactory function and the change in olfactory bulb volume via long-term olfactory rehabilitation after total laryngectomy. Methods: Possible causes of olfactory dysfunction in the study participants were evaluated by collecting detailed anamnesis. As olfactory tests, orthonasal butanol threshold and odor discrimination tests were performed. Three-dimensional olfactory bulb volumes were calculated using manual segmentation on T2-weighted coronal magnetic resonance images. In olfactory rehabilitation, four different odors were applied to all patients orthonasally, using a larynx bypass technique for 30 min per day for 6 months. Olfactory tests were performed before the rehabilitation and after 6 months of rehabilitation, and olfactory bulb volume measurements were performed using magnetic resonance images. Results: Eleven patients diagnosed with advanced laryngeal cancer who underwent total laryngectomy and postoperative radiotherapy with a follow-up of 5-10 years were included in the study. All patients were male, and the mean age was 58.18 ±4.17 years. In total laryngectomized patients, the olfactory bulb volumes measured on magnetic resonance images were 42.25 ± 12.8 mm3 before and 55.5 ± 11.22 mm3 after rehabilitation, and this increase was highly significant. Olfactory test scores were 2.3 ± 1.27 before and 4.39 ± 0.86 after rehabilitation, and this increase was also highly significant. Conclusion: As a result of the olfactory rehabilitation applied by providing orthonasal air flow, the olfactory function lost after total laryngectomy was improved considerably, and the olfactory bulb volume was significantly increased. The increase in olfactory bulb volume in total laryngectomy patients via olfactory rehabilitation to eliminate olfactory deprivation due to nasal airflow interruption was demonstrated for the first time in this prospective longitudinal study.

Resumo Introdução: Após a laringectomia total, foi relatada a ocorrência de diminuição da função olfatória e redução do volume do bulbo olfatório devido à privação olfatória causada pela interrupção do fluxo aéreo nasal. Há evidências de que o sistema olfatório pode ser modulado pela exposição repetida a odores em um procedimento denominado treinamento olfatório. Entretanto, não se sabe se qualquer grau de recuperação do volume perdido do bulbo olfatório é possível ao eliminar a privação olfatória através de reabilitação muito tempo depois da laringectomia. Objetivo: Este estudo avaliou a recuperação da função olfatória e a mudança no volume do bulbo olfatório através da reabilitação olfatória de longo prazo após a laringectomia total. Métodos: As possíveis causas de disfunção olfatória nos participantes do estudo foram avaliadas através da anamnese detalhada. Como testes olfatórios, foram feitos os testes de limiar de butanol ortonasal e de discriminação de odores. Os volumes tridimensionais do bulbo olfatório foram calculados com segmentação manual em imagens de ressonância magnética coronal ponderadas em T2. Na reabilitação olfatória, quatro odores diferentes foram aplicados a todos os pacientes ortonasalmente com uma técnica de bypass laríngeo por 30 minutos por dia durante 6 meses. Os testes olfatórios foram feitos antes da reabilitação e 6 meses após a reabilitação e as medidas do volume do bulbo olfatório foram feitas por imagens de ressonância magnética. Resultados: Foram incluídos no estudo 11 pacientes com diagnóstico de câncer de laringe avançado, submetidos à laringectomia total e radioterapia pós-operatória em um seguimento de 5 a 10 anos. Todos os pacientes eram do sexo masculino e a média de idade foi de 58,18 ± 4,17 anos. Em pacientes com laringectomia total, os volumes do bulbo olfatório medidos por imagens de ressonância magnética foram de 42,25 ± 12,8 mm3 antes e 55,5 ± 11,22 mm3 após a reabilitação e esse aumento foi altamente significante. Os escores dos testes olfatórios foram 2,3 ± 1,27 antes e 4,39 ± 0,86 após a reabilitação e esse aumento também foi altamente significante. Conclusão: Como resultado da reabilitação olfatória aplicada através do fornecimento de fluxo de ar ortonasal, a função olfatória perdida após a laringectomia total melhorou consideravelmente e o volume bulbo olfatório mostrou aumento significativo. O aumento no volume do bulbo olfatório em pacientes submetidos a laringectomia total através da reabilitação olfatória para eliminar a privação olfatória devido à interrupção do fluxo aéreo nasal foi demonstrado pela primeira vez neste estudo longitudinal prospectivo.

Olfactory rehabilitation and olfactory bulb volume changes in patients after total laryngectomy: a prospective randomized study.

INTRODUCTION: After total laryngectomy, decreased olfactory function and olfactory bulb volume shrinkage have been reported to occur due to olfactory deprivation caused by nasal airflow interruption. There is evidence that the olfactory system can be modulated by repeated exposure to odors in a procedure called olfactory training. However, it is not known whether any recovery of the lost olfactory bulb volume is possible by eliminating olfactory deprivation via olfactory rehabilitation long after laryngectomy. OBJECTIVE: This study examined the recovery of olfactory function and the change in olfactory bulb volume via long-term olfactory rehabilitation after total laryngectomy. METHODS: Possible causes of olfactory dysfunction in the study participants were evaluated by collecting detailed anamnesis. As olfactory tests, orthonasal butanol threshold and odor discrimination tests were performed. Three-dimensional olfactory bulb volumes were calculated using manual segmentation on T2-weighted coronal magnetic resonance images. In olfactory rehabilitation, four different odors were applied to all patients orthonasally, using a larynx bypass technique for 30 min per day for 6 months. Olfactory tests were performed before the rehabilitation and after 6 months of rehabilitation, and olfactory bulb volume measurements were performed using magnetic resonance images. RESULTS: Eleven patients diagnosed with advanced laryngeal cancer who underwent total laryngectomy and postoperative radiotherapy with a follow-up of 5-10 years were included in the study. All patients were male, and the mean age was 58.18 ±â€¯4.17 years. In total laryngectomized patients, the olfactory bulb volumes measured on magnetic resonance images were 42.25 ±â€¯12.8 mm3 before and 55.5 ±â€¯11.22 mm3 after rehabilitation, and this increase was highly significant. Olfactory test scores were 2.3 ±â€¯1.27 before and 4.39 ±â€¯0.86 after rehabilitation, and this increase was also highly significant. CONCLUSION: As a result of the olfactory rehabilitation applied by providing orthonasal air flow, the olfactory function lost after total laryngectomy was improved considerably, and the olfactory bulb volume was significantly increased. The increase in olfactory bulb volume in total laryngectomy patients via olfactory rehabilitation to eliminate olfactory deprivation due to nasal airflow interruption was demonstrated for the first time in this prospective longitudinal study.