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Case Reports
. 2021 Apr:81:105742.
doi: 10.1016/j.ijscr.2021.105742. Epub 2021 Mar 11.

Hepatic small vessel neoplasm case report: A surveillance conundrum

Patricia Mulholland  1 , Ian Y Goh  2 , Anna Sokolova  3 , Cheng Liu  4 , Mehan Siriwardhane  1
Affiliations
Case Reports

Hepatic small vessel neoplasm case report: A surveillance conundrum

Patricia Mulholland et al. Int J Surg Case Rep. 2021 Apr.

Abstract

Introduction: Hepatic small vessel neoplasm (HSVN) is a recently described vascular neoplasm of the liver that can mimic hepatic angiosarcoma (AS) because of its infiltrative nature but is considered benign or, at most, low-grade. HSVN appears to demonstrate a benign clinical course with no reported recurrences or metastatic disease, although its long-term malignant potential is uncertain.

Case presentation: We present a 57-year-old man with an incidentally growing segment VII lesion that displayed features concerning for a neoplasm. He underwent a posterior sectionectomy and final histopathology confirmed a 27 mm HSVN. As the long-term malignant potential of HSVN is uncertain, he will be followed up with serial MRI scans over the next 5 years.

Discussion: HSVN is a recently described entity, it is uncertain what the long-term malignant potential of HSVN can be. Reported cases have not shown any evidence of disease progression.

Conclusion: There are no clear guidelines established on the duration of the follow-up of HSVN. More research needs to be done to determine further the natural history of these tumours and possible radiological criteria.

Keywords: Case report; HSVN; Hepatic small vessel neoplasm; Hepatobiliary; Neoplasia.

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Figures

Fig. 1
Fig. 1
Axial T2 Fat-suppressed MRI image of liver. White arrow showing posterior segment VII lesion.
Fig. 2
Fig. 2
Axial LAVA Sequence (Three-dimensional spoiled gradient echo pulse sequence) of liver. White arrow showing posterior segment VII lesion.
Fig. 3
Fig. 3
An intermediate-magnification view of the neoplasm, showing anastomosing vessels between residual hepatocyte islands (bottom left and bottom right). Despite infiltrative growth, there is no cytologic atypia and only rare mitotic activity.
See this image and copyright information in PMC

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