Open AccessLeucocytosis and Stroke in a Lung Cancer Patient
Author(s) -
Neha Akkad,
Yang Jiang,
Daniel Sanghoon Shin
Publication year - 2020
Publication title -
european journal of case reports in internal medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.125
H-Index - 1
ISSN - 2284-2594
DOI - 10.12890/2020_001872
Subject(s) - hypereosinophilia , medicine , malignancy , stroke (engine) , adenocarcinoma , disease , lung cancer , cancer , stage (stratigraphy) , pathology , eosinophilia , mechanical engineering , paleontology , engineering , biology
Significant leucocytosis in the setting of an underlying malignancy may be attributed to several causes and is not uncommon; however, extreme leucocytosis (>50×109 cells/l) and hypereosinophilia is less common and may represent a paraneoplastic syndrome. The underlying mechanism is thought to be bone marrow stimulation by tumour-produced cytokines, most notably interleukin-5 (IL-5) and granulocyte-macrophage colony-stimulating factor (GM-CSF). This paraneoplastic syndrome is likely reflective of extensive disease and dissemination, and options for treatment are limited but include tumour resection, corticosteroids and hydroxyurea. In this report, we discuss an unusual case of known stage III lung adenocarcinoma presenting with an ischaemic stroke and extreme leucocytosis and hypereosinophilia.