The Lesser Sac and Foramen of Winslow: Anatomy, Embryology, and CT Appearance of Pathologic Processes

Mohab M. Elmohr; Katherine J. Blair; Christine O. Menias; Ayman Nada; Akram M. Shaaban; Kumar Sandrasegaran; Khaled M. Elsayes

doi:10.2214/AJR.19.22749

The Lesser Sac and Foramen of Winslow: Anatomy, Embryology, and CT Appearance of Pathologic Processes

Mohab M. Elmohr, Katherine J. Blair, Christine O. Menias, Ayman Nada, Akram M. Shaaban, Kumar Sandrasegaran, Khaled M. Elsayes

Abdominal Imaging

Research output: Contribution to journal › Review article › peer-review

5 Scopus citations

Abstract

OBJECTIVE. This article reviews the embryologic development, relevant anatomy, and imaging features, on CT, of pathologic processes involving the lesser sac and foramen of Winslow. CONCLUSION. The lesser peritoneal sac is an intricate anatomic region involved in many disease processes. It is a significant conduit for the spread of disease within the peritoneal cavity. The spectrum of pathologic processes pertaining to the lesser sac can be classified on the basis of the type of involvement, such as a fluid collection (e.g., transudate, exudate, bile, and blood), a mass (e.g., neoplastic or nonneoplastic conditions and lymphadenopathy), or an internal hernia into the lesser sac.

Original language	English (US)
Pages (from-to)	843-851
Number of pages	9
Journal	American Journal of Roentgenology
Volume	215
Issue number	4
DOIs	https://doi.org/10.2214/AJR.19.22749
State	Published - Oct 2020

Keywords

Foramen of winslow
Lesser sac
Omentum
Peritoneum

ASJC Scopus subject areas

Radiology Nuclear Medicine and imaging

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10.2214/AJR.19.22749

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title = "The Lesser Sac and Foramen of Winslow: Anatomy, Embryology, and CT Appearance of Pathologic Processes",

abstract = "OBJECTIVE. This article reviews the embryologic development, relevant anatomy, and imaging features, on CT, of pathologic processes involving the lesser sac and foramen of Winslow. CONCLUSION. The lesser peritoneal sac is an intricate anatomic region involved in many disease processes. It is a significant conduit for the spread of disease within the peritoneal cavity. The spectrum of pathologic processes pertaining to the lesser sac can be classified on the basis of the type of involvement, such as a fluid collection (e.g., transudate, exudate, bile, and blood), a mass (e.g., neoplastic or nonneoplastic conditions and lymphadenopathy), or an internal hernia into the lesser sac.",

keywords = "Foramen of winslow, Lesser sac, Omentum, Peritoneum",

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T2 - Anatomy, Embryology, and CT Appearance of Pathologic Processes

AU - Elmohr, Mohab M.

AU - Blair, Katherine J.

AU - Menias, Christine O.

AU - Nada, Ayman

AU - Shaaban, Akram M.

AU - Sandrasegaran, Kumar

AU - Elsayes, Khaled M.

PY - 2020/10

Y1 - 2020/10

N2 - OBJECTIVE. This article reviews the embryologic development, relevant anatomy, and imaging features, on CT, of pathologic processes involving the lesser sac and foramen of Winslow. CONCLUSION. The lesser peritoneal sac is an intricate anatomic region involved in many disease processes. It is a significant conduit for the spread of disease within the peritoneal cavity. The spectrum of pathologic processes pertaining to the lesser sac can be classified on the basis of the type of involvement, such as a fluid collection (e.g., transudate, exudate, bile, and blood), a mass (e.g., neoplastic or nonneoplastic conditions and lymphadenopathy), or an internal hernia into the lesser sac.

AB - OBJECTIVE. This article reviews the embryologic development, relevant anatomy, and imaging features, on CT, of pathologic processes involving the lesser sac and foramen of Winslow. CONCLUSION. The lesser peritoneal sac is an intricate anatomic region involved in many disease processes. It is a significant conduit for the spread of disease within the peritoneal cavity. The spectrum of pathologic processes pertaining to the lesser sac can be classified on the basis of the type of involvement, such as a fluid collection (e.g., transudate, exudate, bile, and blood), a mass (e.g., neoplastic or nonneoplastic conditions and lymphadenopathy), or an internal hernia into the lesser sac.

KW - Foramen of winslow

KW - Lesser sac

KW - Omentum

KW - Peritoneum

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The Lesser Sac and Foramen of Winslow: Anatomy, Embryology, and CT Appearance of Pathologic Processes

Abstract

Keywords

ASJC Scopus subject areas

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