Pseudoprogression in lung cancer: a case report

Immunotherapy dramatically changed the management of several malignancies including non-small cell lung cancer (NSCLC). Since immune checkpoint inhibitors have a different mechanism of action from cytotoxic agents or small molecules against NSCLC, also tumor response may present with atypical featur...

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Bibliographic Details
Main Authors: Giulia Meoni (Author), Nicola Libertà Decarli (Author), Maurizio Benucci (Author), Claudio Raspanti (Author), Angela Stefania Ribecco (Author)
Format: Book
Published: Open Exploration Publishing Inc., 2020-10-01T00:00:00Z.
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Summary:Immunotherapy dramatically changed the management of several malignancies including non-small cell lung cancer (NSCLC). Since immune checkpoint inhibitors have a different mechanism of action from cytotoxic agents or small molecules against NSCLC, also tumor response may present with atypical features. Pseudoprogression (PP) is a distinct response pattern defined by a transient enlargement of the tumor burden, sustained by inflammatory cells and usually not associated with worsening of performance status (PS). Here the authors describe the case of a lung adenocarcinoma patient treated with pembrolizumab, who developed an early symptomatic PP with a dramatic global worsening of PS. Subsequently an improvement in general condition and a brilliant tumor response were observed. Tumor re-biopsy was collected after the treatment in order to support the identification of PP and to describe microenvironment modifications induce by immunotherapy.
Item Description:10.37349/etat.2020.00022
2692-3114