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Case Reports
. 2022 May;23(3):e42.
doi: 10.4142/jvs.21289. Epub 2022 Mar 1.

Diagnostic imaging features of hepatic myelolipoma incarcerated in a peritoneopericardial diaphragmatic hernia in a cat

Namsoon Lee  1   2 , Jihye Choi  2 , Junghee Yoon  3
Affiliations
Case Reports

Diagnostic imaging features of hepatic myelolipoma incarcerated in a peritoneopericardial diaphragmatic hernia in a cat

Namsoon Lee et al. J Vet Sci. 2022 May.

Abstract

A 1-year-old male Persian cat was presented for castration. Liver incarcerated in a peritoneopericardial diaphragmatic hernia (PPDH) was diagnosed through pre-anesthetic tests. Multiple homogeneous hyperechoic nodules in the hepatic parenchyma were identified using ultrasound. The nodules showed decreased attenuation compared with normal hepatic parenchyma, and the herniated hepatic parenchyma showed increased arterial and decreased portal enhancement on computed tomography. From the histopathology, we diagnosed hydropic degeneration with portal fibrosis and myelolipoma. This report presents diagnostic imaging features of hepatic myelolipoma incarcerated in a PPDH in a cat. When perfusion of the hepatic parenchyma is altered, surgical treatment should be considered.

Keywords: Cat; diagnostic imaging; myelolipoma; peritoneopericardial diaphragmatic hernia.

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Conflict of interest statement

The authors declare no conflicts of interest.

Figures

Fig. 1
Fig. 1. Ultrasonographic images of hepatic myelolipoma incarcerated in a peritoneopericardial diaphragmatic hernia. The liver and gallbladder are within the pericardial sac (A) and multiple homogeneous hyperechoic nodules with well-defined margins (B, callipers) are observed in the herniated liver parenchyma.
GB, gallbladder.
Fig. 2
Fig. 2. Multi-phase computed tomography images of hepatic myelolipoma incarcerated in a PPDH. Dorsal thin maximum intensity projection image (A, window width 700; window level 80) of the PPDH. Transverse pre-contrast image (B), aortic phase image (C), portal phase image (D), and delayed phase image (E) of the herniated liver (window width 350; window level 50). The herniated left liver lobes have an irregular margin (white arrows), and there multiple hypoattenuated nodules (open white arrows) in the overall herniated liver.
PPDH, peritoneopericardial diaphragmatic hernia; HR, heart; GB, gallbladder; L, liver; F, fat; PV, portal vein.
Fig. 3
Fig. 3. Histopathology shows multifocal adipose tissues (black open arrows) and some myeloid cells (small dark basophilic cells, black arrows) infiltrated in the hepatic parenchyma. Hematoxylin and eosin staining; (A) ×200 magnification; (B) ×400 magnification.
See this image and copyright information in PMC

References

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