Spaghetti sign (bladder)
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At the time the article was created Avni K P Skandhan had no recorded disclosures.View Avni K P Skandhan's current disclosures
At the time the article was last revised Frank Gaillard had no recorded disclosures.View Frank Gaillard's current disclosures
The spaghetti sign may be seen in upper urinary tract bleeding.
It refers to the presence of a linear worm- or spaghetti-like filling defect within a contrast-opacified bladder 1,2. This linear filling defect represents blood clot extruded from the ureter and thereby molded into a tubular shape 1,2. It is seen in patients with gross hematuria 1,2. Presence of this sign is an indication of upper urinary tract bleeding 1,2. The finding can be appreciated on intravenous urogram, retrograde pyelography, and CT in the excretory phase 1,2.
History and etymology
This sign was first described in 1981 by Funsho Komolafe, a Nigerian radiologist working at the University College Hospital, Ibadan at the time 1.
- 1. Komolafe F. The "spaghetti sign": an uncommon radiologic sign of upper urinary tract hemorrhage. AJR Am J Roentgenol. 1981;137 (5): 1062. doi:10.2214/ajr.137.5.1062 - Pubmed citation
- 2. Dyer RB, Chen MY, Zagoria RJ. Classic signs in uroradiology. Radiographics. 2004;24 Suppl 1 (suppl 1): S247-80. Radiographics (full text) - doi:10.1148/rg.24si045509 - Pubmed citation