[Nephrogenic Adenoma : A Case Report].

Area of Science:

• Urology
• Oncology
• Pathology

Background:

• A 62-year-old woman was diagnosed with bladder urothelial carcinoma in situ.
• She underwent transurethral resection of bladder tumor (TURBT) and bacillus Calmette Guérin intravesical therapy.

Purpose of the Study:

• To report a rare case of nephrogenic adenoma developing after treatment for bladder cancer.
• To discuss the diagnostic and management approach for this benign entity.

Main Methods:

• The patient underwent TURBT and intravesical therapy.
• A papillary lesion near the TURBT scar was biopsied.
• Histological examination confirmed nephrogenic adenoma.
• A watchful waiting approach was adopted due to the lesion's spontaneous resolution and benign nature.

Main Results:

• A papillary lesion consistent with nephrogenic adenoma was identified post-treatment.
• The lesion resolved spontaneously without intervention.
• No recurrence was observed at 6-month follow-up.

Conclusions:

• Nephrogenic adenoma can occur in the bladder, potentially mimicking malignancy.
• This benign tumor may resolve spontaneously, supporting a conservative management strategy in select cases.
• Close follow-up is essential to ensure no recurrence or malignant transformation.