Maiden waist deformity

Last updated July 20, 2025

The maiden waist deformity is a radiologic sign associated with retroperitoneal fibrosis, a condition resulting from the abnormal proliferation of fibrous tissue in the retroperitoneal space. The fibrosis can extend to adjacent anatomical structures, frequently encompassing and obstructing the ureters.^[1] This sign refers to the alteration in the normal course of the ureters: when the fibrosis causes both ureters to be pulled medially, they may form the appearance of a "narrow-waisted maiden".^[2]

References

↑ Caiafa, Rafael Oliveira; Vinuesa, Ana Sierra; Izquierdo, Rafael Salvador; Brufau, Blanca Paño; Ayuso Colella, Juan Ramón; Molina, Carlos Nicolau (2013). "Retroperitoneal Fibrosis: Role of Imaging in Diagnosis and Follow-up" . RadioGraphics. 33 (2): 535–552. doi:10.1148/rg.332125085. ISSN 0271-5333. PMID 23479712.
↑ Dyer, Raymond B.; Chen, Michael Y.; Zagoria, Ronald J. (2004). "Classic Signs in Uroradiology" . RadioGraphics. 24 (suppl_1): S247 –S280. doi:10.1148/rg.24si045509. ISSN 0271-5333. PMID 15486245.

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[1] Caiafa, Rafael Oliveira; Vinuesa, Ana Sierra; Izquierdo, Rafael Salvador; Brufau, Blanca Paño; Ayuso Colella, Juan Ramón; Molina, Carlos Nicolau (2013). "Retroperitoneal Fibrosis: Role of Imaging in Diagnosis and Follow-up" . RadioGraphics. 33 (2): 535–552. doi:10.1148/rg.332125085. ISSN 0271-5333. PMID 23479712.

[2] Dyer, Raymond B.; Chen, Michael Y.; Zagoria, Ronald J. (2004). "Classic Signs in Uroradiology" . RadioGraphics. 24 (suppl_1): S247 –S280. doi:10.1148/rg.24si045509. ISSN 0271-5333. PMID 15486245.

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