Splenic cyst

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Splenic cyst is developmental in origin.

True nonparasitic splenic cyst, also called congenital cyst and epidermoid cyst, is defined by the presence of an inner endotheial lining.

Differentiating Splenic cyst from Other Diseases

• Inflammatory (abscesses, hydatid cyst)
• Vascular (infarction], peliosis)
• Posttraumatic (hematoma, false cyst)
• Neoplastic (hemangioma, lymphangioma, lymphoma, metastasis)

Diagnosis

Ultrasound

• Anechoic well-defined, round mass.

CT

• CT typically shows a large, low-attenuation,unilocular mass with imperceptible walls;
• HU are in the range of that of water.
• No enhancement is seen after the administration of contrast material

MRI

• Magnetic resonance (MR) images show a well-defined, round mass.
• On T2-weighted images, the mass has markedly high signal intensity, a characteristic finding of a cyst.

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