Paraneoplastic Leukemoid Reaction in Gastroesophageal Junction Adenocarcinoma: A Case Report.

BACKGROUND The presence of leukocytosis associated with non-hematological malignancy after ruling out other causes is defined as paraneoplastic leukemoid reaction (PLR). PLR is a rare manifestation of various solid tumors. It is associated with poor prognosis unless receiving effective antineoplastic treatments.