Overview

Urethral cancer is a rare malignancy that arises in the lining of the urethra, the tube that carries urine from the bladder to the outside. Because it is uncommon, awareness is lower than for many other urologic cancers. Presentation, management, and outcomes depend strongly on the tumor’s location along the urethra, its histologic type, and the stage at diagnosis.

Characteristics and common types

The cancer may originate from different cell types. The main histologic categories are:

  • Urothelial (transitional cell) carcinoma — often papillary in appearance and the most frequently reported type;
  • Squamous cell carcinoma — arises from squamous epithelium and is linked to chronic irritation or infection;
  • Adenocarcinoma — less common and associated with glandular tissue or urethral diverticula.

Signs and symptoms

Symptoms are variable and may mimic benign urinary problems, which can delay diagnosis. Common features include:

  • Blood in the urine or urethral bleeding
  • Difficulty urinating, weak stream, or urinary retention
  • Recurrent urinary tract infections or persistent pain
  • A palpable mass, discharge, or a lesion visible on the external meatus

Diagnosis and staging

Evaluation usually begins with physical examination and urinalysis, followed by urethroscopy or cystoscopy with biopsy to confirm histology. Imaging studies such as MRI, CT, or ultrasound assess local extent and nodal involvement. Staging systems describe tumor size, local invasion, regional lymph node status, and distant metastases; accurate staging guides therapy.

Treatment and prognosis

Management is individualized by tumor location and stage. Options include local excision for small distal lesions, partial or total urethrectomy, reconstruction, radiation therapy for organ preservation or adjuvant control, and systemic chemotherapy for advanced disease. Multidisciplinary care is important. Prognosis varies: early, localized tumors have a better outlook, while locally advanced disease or nodal metastasis carry a higher risk of recurrence and worse survival.

Risk factors, epidemiology and notable facts

Urethral cancer is uncommon and more often diagnosed in older adults. Contributing factors may include chronic urethral inflammation, long-standing strictures, recurrent infections, prior pelvic radiation, urethral diverticula (in women), and a history of other urothelial malignancies. Human papillomavirus (HPV) has been implicated in some squamous urethral cancers, but associations are less well established than for other genital cancers. Because of its rarity, patients benefit from referral to specialized centers and long-term follow-up to detect recurrence or complications.