Durable disease control after multimodal therapy and platinum-based chemotherapy rechallenge in advanced clear cell adenocarcinoma of the urethra with lymph node metastases: a case report - Report - MDSpire

Durable disease control after multimodal therapy and platinum-based chemotherapy rechallenge in advanced clear cell adenocarcinoma of the urethra with lymph node metastases: a case report

  • By

  • Akihiro Maeda

  • Shohei Tobu

  • Shuhei Kusano

  • Maki Kawasaki

  • Hiroaki Kakinoki

  • Mitsuru Noguchi

  • June 22, 2026

  • 0 min

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Clinical Report: Sustained Disease Management Following Multimodal Treatment

Overview

This case study reports on a 60-year-old woman with advanced clear cell adenocarcinoma of the urethra who achieved long-term disease control following multimodal treatment, including neoadjuvant chemotherapy and radical surgery. The patient remains progression-free 32 months post-diagnosis.

Background

Clear cell adenocarcinoma of the urethra (CCAU) is a rare malignancy with unclear optimal treatment strategies due to its low incidence. The management of advanced or metastatic CCAU, particularly with lymph node involvement, poses significant clinical challenges.

Data Highlights

The study highlights the following data:

  • The patient was diagnosed with advanced CCAU (cT4N2M0) with pelvic lymph node metastases.

  • Neoadjuvant chemotherapy with gemcitabine and cisplatin resulted in a 37.5% reduction in lymph node size, indicating a partial response.

  • Post-surgery, the patient had ypT4N2M0 status with negative surgical margins.

  • Adjuvant nivolumab was discontinued due to immune-related hypothyroidism and nodal recurrence.

  • Reintroduction of gemcitabine and cisplatin chemotherapy achieved another partial response.

  • The patient remains progression-free 32 months after diagnosis.

Key Findings

  • A 60-year-old woman was diagnosed with advanced CCAU (cT4N2M0) with pelvic lymph node metastases.

  • Neoadjuvant chemotherapy with gemcitabine and cisplatin resulted in a 37.5% reduction in lymph node size, indicating a partial response.

  • Post-surgery, the patient had ypT4N2M0 status with negative surgical margins.

  • Adjuvant nivolumab was discontinued due to immune-related hypothyroidism and nodal recurrence.

  • Reintroduction of gemcitabine and cisplatin chemotherapy achieved another partial response.

  • The patient remains progression-free 32 months after diagnosis.

Clinical Implications

This case discusses the management of advanced CCAU, combining chemotherapy and radical surgery.

Conclusion

This case presents a patient with advanced CCAU who achieved long-term disease control following multimodal treatment.

Related Resources & Content

  1. Author(s)/Org, Source, Year -- Title

  2. Frontiers in Oncology, Frontiers in Oncology, 2026 -- Sequential multimodal management for recurrent pulmonary NUT carcinoma: a case report

  3. Independent Prognostic Value of Radiographic and Pathological Lymph Node Assessments for Survival After Neoadjuvant Chemotherapy and Radical Cystectomy in cT3/4 or cN+ Bladder Cancer, Springer, 2022

  4. The ASCO Post, The ASCO Post, 2024 -- Nivolumab Plus Chemotherapy Extends Survival in Lymph Node–Only Metastatic Urothelial Cancer

  5. The ASCO Post — Immunotherapy Has Indelibly Changed the Treatment Paradigm in Urothelial Carcinoma

  6. https://d56bochluxqnz.cloudfront.net/documents/full-guideline/EAU-Guidelines-on-Primary-Urethral-Carcinoma-2026.pdf

  7. https://d56bochluxqnz.cloudfront.net/documents/full-guideline/EAU-Guidelines-on-Primary-Urethral-Carcinoma-2025.pdf

  8. Clinical and histological predictors of treatment outcomes in primary urethral carcinoma - PubMed

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