Wallach's Interpretation of Diagnostic Tests: Pathways to Arriving at a Clinical Diagnosis (326 page)

   Neoplastic diseases, especially Hodgkin lymphoma

   ARDS

   Autoimmune disorders

   Idiopathic CD4
⁺
lymphocytopenia

   CHF

   Increase loss via the GI tract (e.g., intestinal lymphectasia, thoracic duct drainage, obstruction to intestinal lymphatic drainage)

MONOCYTOSIS

   Definition

Absolute monocyte count of >1,200/μL or >12% of a differential count

   Causes

   Acute monocytic or myelomonocytic leukemia, chronic myelomonocytic leukemia (as part of myelodysplastic syndromes, or myeloproliferative neoplasms)

   Hodgkin lymphoma, non-Hodgkin lymphomas, multiple myelomas

   Carcinomas of the ovary, stomach, and breast

   Lipid storage diseases (e.g., Gaucher disease)

   Postsplenectomy

   Recovery from agranulocytosis, chemotherapy, or subsidence of acute infection