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Mast cell sarcoma: new cases and literature review

Jilliana Monnier, Sophie Georgin-Lavialle, Danielle Canioni, Ludovic Lhermitte, Michael Soussan, Michel Arock, Julie Bruneau, Patrice Dubreuil, Christine Bodemer, Marie-Olivia Chandesris, Olivier Lortholary, Olivier Hermine and Gandhi Damaj _

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Oncotarget. 2016; 7:66299-66309. https://doi.org/10.18632/oncotarget.11812

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Abstract

Jilliana Monnier1,*, Sophie Georgin-Lavialle1,2,*, Danielle Canioni2,3, Ludovic Lhermitte2,3, Michael Soussan4, Michel Arock5,6, Julie Bruneau2,3, Patrice Dubreuil2,7, Christine Bodemer2,8, Marie-Olivia Chandesris2, Olivier Lortholary2, Olivier Hermine2,9 and Gandhi Damaj2,10,11

1 Service de Médecine Interne, Hôpital Tenon, Université Paris VI, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France

2 Centre de Référence des Mastocytoses, Faculté de Médecine et AP-HP Necker-Enfants Malades, Paris, France

3 Laboratoire d’Anatomie-Pathologie, Université Paris Descartes, Paris Sorbonne Cité, Faculté de Médecine et AP-HP Necker-Enfants Malades, Paris, France

4 Département de Médecine Nucléaire, Hôpital Avicenne, AP-HP et Université Paris 13, Bobigny, France

5 Laboratoire d’Hématologie, Groupe Hospitalier Pitié-Salpêtrière, AP-HP, Paris, France

6 LBPA CNRS UMR8113, Ecole Normale Supérieure de Cachan, Cachan, France

7 Inserm, U1068, CRCM, [Signaling, Hematopoiesis and Mechanism of Oncogenesis], Institut Paoli-Calmettes, Marseille, Aix-Marseille Univ, CNRS UMR7258, Marseille, France

8 Service de Dermatologie de l’Hôpital Necker Enfants-Malades, AP-HP, Paris, France

9 Service d’hématologie Adulte, Université Paris Descartes et Institut Imagine, Hôpital Necker-Enfants Malades, Paris, France

10 Institut d’Hématologie de Basse Normandie, Centre Hospitalier Universitaire, Caen, France

11 Microenvironnement Cellulaire et Pathologies, Normandie Univ, Unicaen, MILPAT, Caen, France

* These authors have contributed equally to this work

Correspondence to:

Gandhi Damaj, email:

Keywords: mast cell, mastocytosis, mast cell sarcoma, KIT mutations, targeted therapies

Received: March 06, 2016 Accepted: August 24, 2016 Published: October 04, 2016

Abstract

Mast cell sarcoma (MCS) is a rare form of mastocytosis characterized by the presence of solid tumor(s) comprising malignant mast cells that harbor destructive infiltration capability and metastatic potential. Here, we present an extensive literature review and report on 23 cases of MCS, including 3 new cases from the French National Reference Center for Mastocytosis. From our analysis, it appears that MCS can occur at any age. It can manifest de novo or, to a lesser extent, may evolve from a previously established mastocytosis. Bone tumor is a frequent manifestation, and symptoms of mast cell activation are rare. Histological diagnosis can be difficult because MCS is frequently composed of highly atypical neoplastic mast cells and can thus mimic other tumors. Unexpectedly, the canonical KIT D816V mutation is found in only 21% of MCS; therefore, complete KIT gene sequencing is required. The prognosis of patients with MCS is poor, with a median survival time of less than 18 months, and progression to mast cell leukemia is not unusual. Because conventional chemotherapies usually fail, the role of targeted therapies and bone marrow transplantation warrants further investigation in such aggressive neoplasms.


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