Computerized tomography for detecting perivesical infiltration and lymph node metastasis in invasive bladder...

Area of Science:

• Urology
• Radiology
• Oncology

Background:

• Preoperative staging of invasive bladder carcinoma is crucial for treatment planning.
• Computerized tomography (CT) is commonly used for staging, but its accuracy in detecting local invasion and nodal disease is debated.

Purpose of the Study:

• To evaluate the accuracy of CT in detecting perivesical invasion and lymph node metastases in patients with invasive bladder carcinoma.
• To compare CT findings with final pathological results after radical cystectomy and pelvic lymphadenectomy.

Main Methods:

• Retrospective analysis of 100 patients with invasive bladder carcinoma who underwent radical cystectomy.
• Preoperative CT scans were re-evaluated by a uroradiologist blinded to pathological outcomes.
• Assessment for extravesical tumor extension and lymph node metastases.

Main Results:

• CT showed extravesical tumor involvement in 57% of cases, but 22% were false positives and 6% were false negatives.
• Significant discrepancies were found between CT and pathological staging for extravesical spread (p < 0.001).
• CT had moderate concordance with pathological findings for lymph node involvement (kappa = 0.29).

Conclusions:

• CT demonstrates limited accuracy in detecting perivesical infiltration and lymph node metastasis in invasive bladder carcinoma.
• Current CT information is insufficient for precise staging, highlighting the need for improved diagnostic techniques.
• Further research into more reliable staging modalities is warranted for better patient management.