CT Abdomen and Pelvis:
Oral and intravenous contrast enhanced images have been obtained. Comparison made to external study dated XXXX 2014.
Findings:
Within the right transversus abdominis muscle laterally there is a lobulated 7.5 x 3.4 x 7.1 cm hypodense collection with a thick peripheral enhancing rim. There is an adjacent 1.6 x 2.6 x 8.4 cm collection component medially which does not appear to communicate with the larger lateral collection. There is stranding of the adjacent oblique muscles and the peritoneal fat. A trace amount of fluid is seen within Morison's pouch which appears to have a peripheral enhancing rim.
A large 18.4 x 8.6 x 10.0 cm fluid collection is identified within the posterolateral abdominal subcutaneous tissues. This has a linear tract extending to the abdominal wall collection just superior to the iliac crest.
3.7 x 4.9 cm peripheral enhancing lesion within segment 6 of the liver is again demonstrated.
Four subcentimetre cysts identified within the interpolar region of the right kidney. The spleen, adrenals and pancreas are unremarkable. Previous cholecystectomy noted.
No inguinal or intra-abdominal lymphadenopathy.
The imaged lung bases are clear.
No suspicious osseous lesion identified.
Conclusion:
Lobulated collections involving the right transversus abdominis muscle laterally with possible linear tract communication to a larger posterolateral subcutaneous collection inferiorly.
Rim enhancing structure indenting or arising from posteroinferior tip of liver may be a chronic collection related to Morison's pouch rather than a liver parenchymal lesion.
Segment 6 liver lesion is similar in appearance to external CT. External abdominal MRI noted.