Outcome of Concurrent Chemoradiation in Inoperable Muscle Invasive Urothelial Carcinoma of Urinary Bladder in terms of Locoregional Response and Toxicities — A Longitudinal Study in a Tertiary Care Hospital

ABSTRACT

Background: The presenting study was performed to assess the efficacy in terms of tumour response and toxicity profile of a curative intent organ preservation approach in Inoperable Non-metastatic Muscle-Invasive Urinary Bladder Carcinoma. Materials and Methods: Prospective Interventional Single-Arm, Single Center study with a duration of one and half year in which 47 patients with Muscle-invaded Bladder Cancer were treated with Radiotherapy with 64 Gy in 32# along with Concurrent Chemotherapy with three weekly injection Cisplatin in dose of 70 mg/m2. Response evaluation was done using both Clinical and Radiological means and categorized using Response Evaluation Criteria in Solid Tumors (RECIST) v1.1. For adverse events measurement NCI CTCAE (Common Terminology Criteria for Adverse Events, v4.1) and RTOG/EORTC Acute and Late Morbidity criteria was used. Results: Of the 47 patients who completed chemoradiation, complete treatment response was seen in 25 patients (53.2%), 17 patients (36.2%) had partial response on initial assessment and one patient had disease progression both in form of locoregional and distant (lung) metastasis. Stable disease found in (8.5%). Patients with residual disease were advised to undergo salvage treatment. Grade 3 Nephrotoxicity reported in one patient, Grade 2 Cystitis in 32 patients (68.1%), while Grade 2 Diarrhoea occurred in four patients (8.5%). Hematological toxicity attributable to Chemoradiotherapy included Grade 2, Grade 3 Neutropenia seen in 6.4% and 2.1% respectively and Grade 2 Anaemia in 4.3% patients. Conclusion: Concurrent Chemoradiotherapy is well-tolerated, effective and convenient curative treatment option for patients with Inoperable Non-metastatic Muscle Invasive Carcinoma of Urinary Bladder