Wasserman N F
Department of Radiology (114), Department of Veterans Affairs Medical Center, Minneapolis, Minnesota 55417.
Abdom Imaging. 1994 Jul-Aug;19(4):376-8. doi: 10.1007/BF00198204.
A rare pseudodiverticular pattern of metastatic malignancy to the ureter is reported along with pathologic findings at postmortem examination in three patients. There was no clinical or pathological obstruction. This pattern is due to malignancy-induced edema in the subepithelial connective tissues and muscularis propria causing displacement of these layers into the ureteral lumen resulting in an undulating epithelial surface. The epithelium itself is normal. Metastases to the ureter is uncommon in life unless associated with ureteral obstruction. Ureteral pseudodiverticulosis found in vivo in a nonobstructed patient with known metastatic malignancy is likely due to inflammatory causes and usually reversible with antibiotic and medical therapy. A patient with widespread malignancy showing nonreversibility of the ureteral pseudodiverticular pattern, even in the absence of obstruction, should be considered a candidate for impending obstruction and followed closely for ureteral stent placement.
报告了三例输尿管转移性恶性肿瘤的罕见假憩室样模式，并伴有尸检时的病理结果。不存在临床或病理梗阻。这种模式是由于上皮下结缔组织和固有肌层的恶性肿瘤引起的水肿，导致这些层移位到输尿管腔内，从而使上皮表面呈波浪状。上皮本身是正常的。除非伴有输尿管梗阻，输尿管转移在生前并不常见。在已知有转移性恶性肿瘤的无梗阻患者体内发现的输尿管假憩室病可能是由炎症引起的，通常通过抗生素和药物治疗可逆转。即使在没有梗阻的情况下，出现输尿管假憩室样模式且不可逆转的广泛恶性肿瘤患者，应被视为即将发生梗阻的候选者，并密切随访以放置输尿管支架。
