Histological characterization of liver involvement in systemic mastocytosis. - Université de Lille
Article Dans Une Revue Liver International Année : 2024

Histological characterization of liver involvement in systemic mastocytosis.

1 Imagine - U1163 - Imagine - Institut des maladies génétiques (IHU)
2 Hôpital Necker - Enfants Malades [AP-HP]
3 Service de pathologie [CHU Necker]
4 UPCité - Université Paris Cité
5 UNICAEN Santé - Université de Caen Normandie - UFR Santé
6 CHU Toulouse - Centre Hospitalier Universitaire de Toulouse
7 CHU Pitié-Salpêtrière [AP-HP]
8 CRCM - Centre de Recherche en Cancérologie de Marseille
9 UCA - Université Clermont Auvergne
10 CHELTER - Role of intra-Clonal Heterogeneity and Leukemic environment in ThErapy Resistance of chronic leukemias
11 CHU Clermont-Ferrand
12 CIC 1405 - Centre d'Investigation Clinique [CHU Clermont-Ferrand]
13 CHRU Lille - Centre Hospitalier Régional Universitaire [CHU Lille]
14 INFINITE - Institute for Translational Research in Inflammation - U 1286
15 UGA UFRM - Université Grenoble Alpes - UFR Médecine
16 CHU Amiens-Picardie
17 AMU - Aix Marseille Université
18 TIMONE - Hôpital de la Timone [CHU - APHM]
19 CHBA - Centre hospitalier Bretagne Atlantique (Morbihan)
20 Centre Hospitalier Universitaire de Rennes [CHU Rennes] = Rennes University Hospital [Pontchaillou]
21 Hôtel-Dieu de Nantes
22 CHRU Nancy - Centre Hospitalier Régional Universitaire de Nancy
23 Hôpital Saint Eloi [CHU Montpellier]
24 UM - Université de Montpellier
25 CHU Strasbourg - Centre Hospitalier Universitaire [Strasbourg]
26 CHRU Besançon - Centre Hospitalier Régional Universitaire de Besançon
27 Hôpital Européen [Fondation Ambroise Paré - Marseille]
28 CHU Sud Saint Pierre [Ile de la Réunion]
29 Hôpital Dupuytren [CHU Limoges]
30 CHU de Poitiers [La Milétrie] - Centre hospitalier universitaire de Poitiers = Poitiers University Hospital
31 UB - Université de Bordeaux
32 Hôpital Haut-Lévêque [CHU Bordeaux]
33 CHU Angers - Centre Hospitalier Universitaire d'Angers
34 CHRU Tours - Centre Hospitalier Régional Universitaire de Tours
35 HCL - Hospices Civils de Lyon
36 CHLS - Centre Hospitalier Lyon Sud [CHU - HCL]
37 CHU Bordeaux - Centre Hospitalier Universitaire de Bordeaux
38 SU - Sorbonne Université
39 CHU Tenon [AP-HP]
40 Hôpital Cochin [AP-HP]
41 UNICAEN - Université de Caen Normandie
Antoine Neel

Résumé

Background and Aims Systemic mastocytosis (SM) is characterized by the accumulation of atypical mast cells (MCs) in organs. Liver histology of SM has been marginally described and accurate histological classification is critical, given the consequences of aggressive SM diagnosis. We aimed to describe the histological features associated with liver SM using updated tools. Methods Using the database of the French Reference Centre for Mastocytosis, we retrospectively identified patients with a liver biopsy (LB) and a diagnosis of SM. All LB procedures were performed according to the local physician in charge and centrally reviewed by an expert pathologist. Results A total of 28 patients were included: 6 had indolent SM, 9 had aggressive SM, and 13 had SM with an associated hematologic neoplasm. Twenty-five (89%) patients presented hepatomegaly, and 19 (68%) had portal hypertension. The LB frequently showed slight sinusoid dilatation (82%). Fibrosis was observed in 3/6 indolent SM and in almost all advanced SM cases (21/22), but none of them showed cirrhosis. A high MC burden (>50 MCs/high-power field) was correlated with elevated blood alkaline phosphatase levels (p = .030). The presence of portal hypertension was associated with a higher mean fibrosis grade (1.6 vs. 0.8 in its absence; p = .026). In advanced SM, the presence of nodular regenerative hyperplasia (NRH) was associated with decreased overall survival (9.5 vs. 46.3 months, p = .002). Conclusions MC infiltration induced polymorphic hepatic lesions and the degree of fibrosis is associated with portal hypertension. NRH identifies a poor prognosis subgroup of patients with advanced SM. Assessing liver histology can aid in SM prognostic evaluation.
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Dates et versions

hal-04685730 , version 1 (03-09-2024)

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Julien Rossignol, Danielle Canioni, Achille Aouba, Cristina Bulai-Livideanu, Stéphane Barete, et al.. Histological characterization of liver involvement in systemic mastocytosis.. Liver International, 2024, Liver International, 44 (7), pp.1680-1688. ⟨10.1111/liv.15913⟩. ⟨hal-04685730⟩
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