Nodules in PSVD - Paris PSVD Meeting

Nodules in PSVD - Paris PSVD Meeting

🎙 Prof. Christine Sempoux and Prof. Maxime Ronot 👥 2K 📅 January 23, 2026 ⏱ 30 min 👁 48 📄 expert opinion 🧭 2026-08-16
Available in: English (current) Français

Keywords

PSVDliver nodulesFNH-likeHCCimaginghistopathologymolecular analysis

Summary

This presentation from the Paris PSVD Meeting 2025, delivered by Prof. Christine Sempoux (pathologist) and Prof. Maxime Ronot (radiologist), addresses the characteristics and diagnostic challenges of hepatocellular nodules in Porto-Sinusoidal Vascular Disease (PSVD). The speakers first review the relationship between vascular liver diseases and hepatocellular nodules, emphasizing that most nodules are benign reactive proliferations, but malignant ones (HCC) can occur. They highlight that imaging features, such as arterial phase enhancement and washout, are less specific in vascular liver disease than in cirrhosis, making differentiation difficult. The use of liver-specific contrast agents (hepatobiliary phase) is presented as a valuable tool, as benign lesions typically show uptake while HCCs do not. The pathological perspective covers various nodule types: large regenerative nodules, focal nodular hyperplasia (FNH), FNH-like nodules, hepatocellular adenomas (HCA), and HCC. The speakers note overlapping features and the importance of molecular analysis in atypical cases. They review nodules in other vascular diseases (Budd-Chiari syndrome, Fontan-associated liver disease, congenital portosystemic shunts, hereditary hemorrhagic telangiectasia) to extrapolate to PSVD, where data are scarce. In PSVD, nodules appear less frequent (12-30% in cohorts) and HCC is uncommon (0.5% incidence). The presentation concludes with challenges: standardizing terminology (e.g., using ‘well-differentiated hepatocellular lesion’ with HCA-like or FNH-like qualifiers) and the need for large morphological studies with imaging correlation and molecular characterization. A liver biopsy is recommended for definitive diagnosis when imaging is atypical.

227 words

Critical Evaluation

Value of the Information & Strength of the Argument

The presentation provides valuable insights into the challenging diagnosis of liver nodules in PSVD, synthesizing current knowledge from both radiology and pathology. The argumentation is solid, grounded in clinical experience and published literature, with clear acknowledgment of the limitations and gaps in PSVD-specific data. The speakers effectively use examples and case illustrations to support their points, and they emphasize the importance of a multidisciplinary approach. The discussion of ancillary imaging features and the role of liver-specific contrast agents is particularly informative, offering practical guidance for clinicians. The pathological classification and the proposal for updated terminology are well-argued, reflecting ongoing efforts to standardize diagnosis. Overall, the value lies in its comprehensive overview and the expert perspectives shared, which are crucial for healthcare professionals managing these patients.

Scientific Rigor, Source Quality, Title Accuracy

The presentation demonstrates scientific rigor, with references to published studies and ongoing research, including work by the International Liver Pathologists Study Group and a molecular characterization study in Paris. The speakers clearly distinguish between established knowledge and extrapolations from other vascular liver diseases, appropriately cautioning about the lack of PSVD-specific data. The title accurately reflects the content, focusing on nodules in PSVD as presented at a specialized meeting. The content is well-structured, and the speakers’ expertise is evident. No comments were provided, so no analysis of public feedback is included.

230 words

Title / Content Match

The title accurately reflects the content, focusing on liver nodules in PSVD as presented at a specialized meeting.

Quality & Reliability

8/10

Presentation by two recognized experts in liver pathology and radiology, based on established literature and clinical experience, with clear acknowledgment of data limitations in PSVD.

Key Moments

Markers derived by PSI from the transcript: the creator did not define chapters.

Cited Sources

  • FILFOIE website — Mentioned in the video description as the network's official website.
  • Chapter by Valerie and Aurelie Bouffard — Referenced by Prof. Sempoux as a source for histopathological images of liver nodules.

Concurring Sources

  • FILFOIE website — The video description mentions this website as the official FILFOIE network site, which likely contains additional information on PSVD.

Contribution & Novelties

This presentation offers a comprehensive and up-to-date overview of liver nodules in PSVD, synthesizing radiological and pathological perspectives. Its original contribution lies in highlighting the diagnostic challenges specific to PSVD, where data are scarce, and in proposing a standardized terminology for well-differentiated hepatocellular lesions. The emphasis on the utility of liver-specific contrast agents and molecular analysis provides practical guidance for clinicians. The presentation also underscores the need for collaborative research and large-scale studies to better characterize these nodules.

Pour aller plus loin :

162 words

Radar Profile

The radar profile shows high scores in quality of information, technical level, and overall reliability, with a slightly lower score in quantity of information due to the focused scope of the presentation. This indicates a highly specialized and reliable source for healthcare professionals.

Reliability 8/10