Ovarian and peritoneal psammocarcinoma: Results of a multicenter study on 25 patients

Jean-Baptiste Delhorme & Franck Zinzindohoue et al. · 2019-12-09

Psammocarcinoma (PK) is a rare disease of unknown origin. We aimed to report the characteristics, management and survival of patients operated on for PK within the French Network for Rare Peritoneal Malignancies (RENAPE) expert centers. All consecutive cases of PK operated within all 26 RENAPE centers between 1997 and 2018 were retrospectively analyzed. Twenty-five patients were identified. The median age was 53 years [range 17-78]. None of the patients had extra peritoneal metastases at diagnosis. A median of 6 cycles of carboplatin-based systemic chemotherapy was delivered in 52% preoperatively (n = 13) and 56% postoperatively (n = 14); associated with placlitaxel for 12 patients. All patients were operated on. The median PCI was 23 [0-33]. Eighty-four percent had a complete cytoreductive surgery through digestive (n = 7), spleen (n = 3), pancreas (n = 1) resections and/or multiple peritonectomies (n = 11). Five patients (20%) had intraperitoneal chemotherapy. Morbidity (Dindo-Clavien ≥3) was 12%. No postoperative death occurred. After a median follow-up of 42 months (range [2-194]), the median overall (OS) and progression-free (DFS) survival times were respectively 128 months and 31 months. Eighteen patients recurred (72%), mainly in the peritoneum (n = 16). Four of them (22%) were reoperated. The 5 and 10-year DFS rates were both 20.3%. The 5 and 10-year OS rates were 62% and 51.7%, respectively. A complete cytoreductive surgery was associated with a better OS and DFS in a univariate analysis. Complete cytoreductive surgery is the cornerstone of the PK's management as a primary treatment. Recurrence remains common and new adjuvant strategies seem needed.
Authors
Jean-Baptiste Delhorme, Jordan Ohayon, Sébastien Gouy, Gerlinde Averous, Catherine Genestie, Léopold Gaichies, Olivier Glehen, Jean-Marc Guilloit, Denis Pezet, Francois Quenet, Gwenaël Ferron, Cécile Brigand, Philippe Morice, Charles Honoré, Julio Abba, Karine Abboud, Mohammad Alyami, Catherine Arvieux, Gerlinde Averous, Naoual Bakrin, Gisèle Balagué, Vincent Barrau, Houda Ben Rejeb, Jean-Marc Bereder, Isabelle Berton-Rigaud, Frédéric Bibeau, Isabelle Bonnefoy, Dominique Bouzard, Ivan Bricault, Cécile Brigand, Sébastien Carrère, Cécile de Chaisemartin, Madleen Chassang, Anne Chevallier, Thomas Courvoisier, Peggy Dartigues, Anthony Dohan, Julien Dubreuil, Frédéric Dumont, Clarisse Eveno, Marie Faruch-Bilfeld, Gwenaël Ferron, Juliette Fontaine, Laure Fournier, Johan Gagniere, Delphine Geffroy, Laurent Ghouti, François-Noël Gilly, Laurence Gladieff, Olivier Glehen, Diane Goéré, Aymeric Guibal, Jean-Marc Guilloit, Frédéric Guyon, Bruno Heyd, Christine Hoeffel, Constance Hordonneau, Sylvie Isaac, Peggy Jourdan-Enfer, Rachid Kaci, Reza Kianmanesh, Catherine Labbé-Devilliers, Joëlle Lacroix, Bernard Lelong, Agnès Leroux-Broussier, Yoann Lherm, Réa Lo Dico, Gérard Lorimier, Caroline Malhaire, Frédéric Marchal, Pascale Mariani, Emilie Mathiotte, Pierre Meeus, Eliane Mery, Simon Msika, Cédric Nadeau, Pablo Ortega-Deballon, Guillaume Passot, Olivier Pellet, Patrice Peyrat, Denis Pezet, Nicolas Pirro, Marc Pocard, Flora Poizat, Jack Porcheron, Anaïs Poulet, François Quenet, Patrick Rat, Pierre Rousselot, Pascal Rousset, Hélène Senellart, Martine Serrano, Vincent Servois, Olivia Sgabura, Andrea Skanjeti, Magali Svrcek, Raphaël Tetreau, Emilie Thibaudeau, Yann Touchefeu, Jean-Jacques Tuech, Séverine Valmary-Degano, Delphine Vaudoyer, Stéphane Velasco, Véronique Verriele-Beurrier, Laurent Villeneuve, Romuald Wernert, Franck Zinzindohoue