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Related Experiment Video

Updated: May 8, 2026

Electrophysiology of Scorpion Peg Sensilla

Electrophysiology of Scorpion Peg Sensilla

Published on: April 13, 2011

A phrygian cap.

Marie-Janne S van Kamp¹, Donald E Bouman, Pascal Steenvoorde

¹Medisch Spectrum Twente, Enschede, The Netherlands.

Case Reports in Gastroenterology

|September 11, 2013

Summary

A Phrygian cap, a common gallbladder anomaly, can mimic liver masses on imaging but is benign. This case highlights its incidental surgical discovery and imaging detection, emphasizing its lack of clinical significance.

Keywords:

Cholecystectomy Congenital anomaly Gallbladder abnormalities Gallbladder imaging

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Last Updated: May 8, 2026

Electrophysiology of Scorpion Peg Sensilla

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Published on: April 13, 2011

Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry

Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry

Published on: March 4, 2021

Area of Science:

Gastroenterology
Radiology
Surgical Pathology

Background:

A Phrygian cap is a congenital gallbladder anomaly occurring in 4% of the population.
This anatomical variation can present as a simulated liver mass on hepatobiliary imaging.
It is crucial to differentiate Phrygian cap from actual hepatic pathology due to its benign nature.

Observation:

A case is presented where a Phrygian cap was incidentally discovered during surgery for colon cancer with liver metastasis.
Preoperative MRI had retrospectively identified the gallbladder deformity.
Cholecystectomy was performed to facilitate a liver wedge resection, not due to symptoms from the Phrygian cap.

Findings:

The Phrygian cap, characterized by a folded gallbladder fundus, has no pathological significance and typically remains asymptomatic.
Radiographic imaging, including MRI and CT, aids in diagnosing this anomaly and distinguishing it from neoplastic lesions.
This case underscores the importance of recognizing benign anatomical variants in surgical and radiological assessments.

Implications:

Accurate identification of Phrygian cap through advanced imaging (multiphase MRI/CT) prevents unnecessary interventions and patient anxiety.
Understanding this anomaly improves diagnostic accuracy in hepatobiliary imaging, reducing misdiagnosis of liver masses.
This highlights the need for continued literature on imaging aspects of common, yet potentially confusing, anatomical variations.