Manta ray sign (bladder)
Citation, DOI, disclosures and article data
Citation:
Dixon A, Niknejad M, Bickle I, et al. Manta ray sign (bladder). Reference article, Radiopaedia.org (Accessed on 21 Mar 2025) https://doi.org/10.53347/rID-30152
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rID:
30152
Article created:
Disclosures:
At the time the article was created Andrew Dixon had no recorded disclosures.
View Andrew Dixon's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Rohit Sharma had no financial relationships to ineligible companies to disclose.
View Rohit Sharma's current disclosures
Revisions:
21 times, by
13 contributors -
see full revision history and disclosures
Systems:
Sections:
Synonyms:
- Manta ray appearance
The manta ray sign is a radiographic appearance in bladder exstrophy. It describes wide midline separation of the pubic bones simulating the appearance of a manta ray 1. The sacrum and iliac wings recall the manta ray’s head and body, with the widely spaced pubic rami forming its cephalic flaps .
Differential diagnosis
On a plain radiograph consider:
open book pelvic injuries: the smooth arc of the pelvis outline in bladder exstrophy differentiates it from acquired separation of the pubic symphysis seen in open book pelvic injuries
References
- 1. Roller BL, Dyer RB. The "manta ray" pelvis. Abdominal radiology (New York). 41 (8): 1666-7. doi:10.1007/s00261-016-0706-y - Pubmed
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