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Clockwise whirlpool sign at color Doppler US: an objective and definite sign of midgut volvulus.
Radiology. 1996 Apr; 199(1):261-4.R

Abstract

PURPOSE

To evaluate the clockwise whirlpool sign at color Doppler ultrasound (US) in the diagnosis of midgut volvulus.

MATERIALS AND METHODS

Pediatric patients (160 boys, 76 girls; age range, 0 day to 14 years) with possible midgut volvulus underwent abdominal gray-scale US and color Doppler US. Midgut volvulus was diagnosed by recognition of the whirlpool sign (wrapping of the superior mesenteric vein and the mesentery around the superior mesenteric artery). If the whirlpool rotated clockwise with caudal movement of the transducer, the direction of the whirlpool was defined as clockwise.

RESULTS

Color Doppler US showed a whirlpool sign that was clockwise in 12 of 13 patients with surgically confirmed midgut volvulus and counterclockwise in three patients without midgut volvulus. Sensitivity, specificity, and positive predictive value of clockwise whirlpool sign for midgut volvulus were 92%, 100%, and 100%.

CONCLUSION

The clockwise whirlpool sign is diagnostic of midgut volvulus. Color Doppler US should be performed as an initial imaging study in children suspected of having midgut volvulus.

Authors+Show Affiliations

Department of Radiology, Saitama Children's Medical Center, Japan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

8633156

Citation

Shimanuki, Y, et al. "Clockwise Whirlpool Sign at Color Doppler US: an Objective and Definite Sign of Midgut Volvulus." Radiology, vol. 199, no. 1, 1996, pp. 261-4.
Shimanuki Y, Aihara T, Takano H, et al. Clockwise whirlpool sign at color Doppler US: an objective and definite sign of midgut volvulus. Radiology. 1996;199(1):261-4.
Shimanuki, Y., Aihara, T., Takano, H., Moritani, T., Oguma, E., Kuroki, H., Shibata, A., Nozawa, K., Ohkawara, K., Hirata, A., & Imaizumi, S. (1996). Clockwise whirlpool sign at color Doppler US: an objective and definite sign of midgut volvulus. Radiology, 199(1), 261-4.
Shimanuki Y, et al. Clockwise Whirlpool Sign at Color Doppler US: an Objective and Definite Sign of Midgut Volvulus. Radiology. 1996;199(1):261-4. PubMed PMID: 8633156.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Clockwise whirlpool sign at color Doppler US: an objective and definite sign of midgut volvulus. AU - Shimanuki,Y, AU - Aihara,T, AU - Takano,H, AU - Moritani,T, AU - Oguma,E, AU - Kuroki,H, AU - Shibata,A, AU - Nozawa,K, AU - Ohkawara,K, AU - Hirata,A, AU - Imaizumi,S, PY - 1996/4/1/pubmed PY - 1996/4/1/medline PY - 1996/4/1/entrez SP - 261 EP - 4 JF - Radiology JO - Radiology VL - 199 IS - 1 N2 - PURPOSE: To evaluate the clockwise whirlpool sign at color Doppler ultrasound (US) in the diagnosis of midgut volvulus. MATERIALS AND METHODS: Pediatric patients (160 boys, 76 girls; age range, 0 day to 14 years) with possible midgut volvulus underwent abdominal gray-scale US and color Doppler US. Midgut volvulus was diagnosed by recognition of the whirlpool sign (wrapping of the superior mesenteric vein and the mesentery around the superior mesenteric artery). If the whirlpool rotated clockwise with caudal movement of the transducer, the direction of the whirlpool was defined as clockwise. RESULTS: Color Doppler US showed a whirlpool sign that was clockwise in 12 of 13 patients with surgically confirmed midgut volvulus and counterclockwise in three patients without midgut volvulus. Sensitivity, specificity, and positive predictive value of clockwise whirlpool sign for midgut volvulus were 92%, 100%, and 100%. CONCLUSION: The clockwise whirlpool sign is diagnostic of midgut volvulus. Color Doppler US should be performed as an initial imaging study in children suspected of having midgut volvulus. SN - 0033-8419 UR - https://www.unboundmedicine.com/medline/citation/8633156/Clockwise_whirlpool_sign_at_color_Doppler_US:_an_objective_and_definite_sign_of_midgut_volvulus_ L2 - http://pubs.rsna.org/doi/10.1148/radiology.199.1.8633156?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -