Percutaneous fine needle aspiration biopsy was performed at retrograde pyelography in order to differentiate between metastatic and scarry involvement of a strictured ureter in a patient earlier operated upon because of malignant teratoma. The method is recommended in patients with malignant diseases where the differential diagnosis is impossible to establish at retrograde pyelography or urography.
No takes yet. Share an insight, caveat, or question.
Ekelund et al. (1976) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: