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Regenerative hepatic pseudotumor: a new pseudotumor of the liver.

Publication ,  Journal Article
Torbenson, M; Yasir, S; Anders, R; Guy, CD; Lee, HE; Venkatesh, SK; Wu, T-T; Chen, ZE
Published in: Hum Pathol
May 2020

Cases of new pseudotumors of the liver were collected from multiple medical centers. Four resection and 4 biopsy specimens were collected, including 4 women and 4 men at an average age of 48 ± 15 years (range: 28-73 years). The lesions were visible on imaging but were either ill-defined or had indeterminate features for characterization. They ranged in size from 2 to 9 cm and were multiple in five cases. The resection specimens showed lesions that had vague borders but were visible in juxtaposition to the normal liver on gross examination. Histologically, the lesions also had ill-defined borders and were composed of benign reactive liver parenchyma. Central vein thrombi were seen in 5 cases, and portal vein thrombi, in 2 cases. These vascular changes were associated reactive parenchymal changes including sinusoidal dilation, patchy bile ductular proliferation, and portal vein abnormalities. All lesions lacked the histological findings of hepatic adenomas, focal nodular hyperplasia, or other known tumors and pseudotumors of the liver. In summary, this study provides a detailed description of a new pseudotumor of the liver: a reactive, hyperplastic mass-like lesion that forms in association with localized vascular thrombi, for which we propose the term regenerative hepatic pseudotumor. This lesion can closely mimic other benign or malignant hepatic tumors on imaging and histology.

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Published In

Hum Pathol

DOI

EISSN

1532-8392

Publication Date

May 2020

Volume

99

Start / End Page

43 / 52

Location

United States

Related Subject Headings

  • Venous Thrombosis
  • United States
  • Portal Vein
  • Pathology
  • Middle Aged
  • Male
  • Liver Diseases
  • Liver
  • Humans
  • Hepatectomy
 

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Torbenson, M., Yasir, S., Anders, R., Guy, C. D., Lee, H. E., Venkatesh, S. K., … Chen, Z. E. (2020). Regenerative hepatic pseudotumor: a new pseudotumor of the liver. Hum Pathol, 99, 43–52. https://doi.org/10.1016/j.humpath.2020.03.010
Torbenson, Michael, Saba Yasir, Robert Anders, Cynthia D. Guy, Hee Eun Lee, Sudhakar K. Venkatesh, Tsung-Teh Wu, and Zongming Eric Chen. “Regenerative hepatic pseudotumor: a new pseudotumor of the liver.Hum Pathol 99 (May 2020): 43–52. https://doi.org/10.1016/j.humpath.2020.03.010.
Torbenson M, Yasir S, Anders R, Guy CD, Lee HE, Venkatesh SK, et al. Regenerative hepatic pseudotumor: a new pseudotumor of the liver. Hum Pathol. 2020 May;99:43–52.
Torbenson, Michael, et al. “Regenerative hepatic pseudotumor: a new pseudotumor of the liver.Hum Pathol, vol. 99, May 2020, pp. 43–52. Pubmed, doi:10.1016/j.humpath.2020.03.010.
Torbenson M, Yasir S, Anders R, Guy CD, Lee HE, Venkatesh SK, Wu T-T, Chen ZE. Regenerative hepatic pseudotumor: a new pseudotumor of the liver. Hum Pathol. 2020 May;99:43–52.
Journal cover image

Published In

Hum Pathol

DOI

EISSN

1532-8392

Publication Date

May 2020

Volume

99

Start / End Page

43 / 52

Location

United States

Related Subject Headings

  • Venous Thrombosis
  • United States
  • Portal Vein
  • Pathology
  • Middle Aged
  • Male
  • Liver Diseases
  • Liver
  • Humans
  • Hepatectomy