Pear-shaped bladder
Last revised by Frank Gaillard on 19 Aug 2024
Citation, DOI, disclosures and article data
Citation:
Gaillard F, Jones J, Balasubramanian S, et al. Pear-shaped bladder. Reference article, Radiopaedia.org (Accessed on 05 Oct 2024) https://doi.org/10.53347/rID-1852
Permalink:
rID:
1852
Article created:
Disclosures:
At the time the article was created Frank Gaillard had no recorded disclosures.
View Frank Gaillard's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Frank Gaillard had no financial relationships to ineligible companies to disclose.
View Frank Gaillard's current disclosures
Revisions:
16 times, by
11 contributors -
see full revision history and disclosures
Systems:
Tags:
Synonyms:
- Pear shaped bladder
- Tear drop shaped bladder
- Teardrop-shaped bladder
Pear-shaped (or teardrop-shaped) bladder is one whose normal round or oval shape has been extrinsically compressed to resemble a pear. The pear may be inverted or upright, depending on how the excess pelvic tissue compresses the bladder.
Pathology
Etiology
Causes of a pear-shaped bladder include:
-
pelvic fluid
pelvic hematoma: the original description of the inverted pear-shaped bladder was in patients with pelvic trauma and hematoma; it can also be seen in patients receiving anticoagulation therapy
bilateral lymphoceles: may develop following radical pelvic lymph node dissection
extravasated urine / bilateral urinomas
abscess
pelvic lipomatosis: non-malignant overgrowth of fat around the bladder that causes an inverted pear-shaped bladder
-
vascular dilatation
bilateral iliac artery aneurysms; upright pear-shaped
-
inferior vena cava (IVC) occlusion
causes formation of collateral vessels that compress the bladder and form an inverted pear-shaped bladder; in the days of intravenous urograms, the combination of a renal mass and a pear-shaped bladder was a red flag for renal cell carcinoma involving the renal vein and IVC 2
-
psoas muscle hypertrophy
upright pear-shaped, especially in people with narrow pelvises
a ratio of the (sum of the widths of the two psoas muscles): (the pelvic width) >0.98 predisposes to bladder compression 2,3,6
References
- 1. Ambos M, Bosniak M, Lefleur R, Madayag M. The Pear-Shaped Bladder. Radiology. 1977;122(1):85-8. doi:10.1148/122.1.85 - Pubmed
- 2. Amendola M. Imaging of Benign Conditions of the Bladder: Urography/Cystography/Ultrasound/CT. Lower Genitourinary Radiology. 1998;:35-79. doi:10.1007/978-1-4612-1648-3_3
- 3. Chang S. Pear-Shaped Bladder Caused by Large Iliopsoas Muscles. Radiology. 1978;128(2):349-50. doi:10.1148/128.2.349 - Pubmed
- 4. Dyer R, Chen M, Zagoria R. Classic Signs in Uroradiology. Radiographics. 2004;24 Suppl 1(suppl_1):S247-80. doi:10.1148/rg.24si045509 - Pubmed
- 5. Roche C, O'Keeffe D, Lee W, Duddalwar V, Torreggiani W, Curtis J. Selections from the Buffet of Food Signs in Radiology. Radiographics. 2002;22(6):1369-84. doi:10.1148/rg.226025521 - Pubmed
- 6. Wechsler R & Brennan R. Teardrop Bladder: Additional Considerations. Radiology. 1982;144(2):281-4. doi:10.1148/radiology.144.2.7089281 - Pubmed
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