Malignant or benign leukocytosis

The condition in which white cells are present in greater numbers than normal is termed leukocytosis. Distinguishing a reactive lymphoid proliferation from a lymphoproliferative disorder requires examination of lymphocyte morphology for pleomorphic lymphocytes versus a monomorphic population, with the latter favoring a lymphoproliferative neoplasm. Thank you for your feedback.

Help us improve this article! Automated hematology analyzers rapidly analyze whole blood samples for the complete blood cell count and differential, including WBC count, RBC count, platelet count, hemoglobin concentration, hematocrit, RBC indices, and the leukocyte differential.

Granulocytosis (Leukocytosis)

Distinguishing a myeloid process from a lymphoid process is essential. The most common etiology of leucopenia is decreased marrow production due to a variety of disorders that damage the developing leukocyte mass in the bone marrow. Certain types of infection are characterized from the beginning by an increase in the number of small lymphocytes unaccompanied by increases in monocytes or granulocytes.

Often, the diagnosis of leukemia or an infiltrative bone marrow disease may be made if blast cells or a leukoerythroblastic blood picture are present, respectively. You can make it easier for us to review and, hopefully, publish your contribution by keeping a few points in mind. About About Drugs.

Blood disease - Leukocytosis

Next, with a gentle circular, rocking type motion, the needle is removed, containing the core biopsy specimen containing the architectural marrow space along with trabecular and cortical bone.

Email Address. Neutrophils include segmented and band forms. Typically a Jamshidi needle is advanced with gentle but constant force through the bone cortex into the marrow space. Lymphocytic leukocytosis Viral infections e. Chronic myelogenous leukemia [7].

You may not have any signs or symptoms. Up to Date , [Web site]. Nucleated RBCs are also detected routinely, and some analyzers also quantitate immature granulocytes. Medically reviewed on Dec 21, Next page Leukemia. A properly prepared smear is wedge shaped with a slightly rounded edge and shows a normal gradation of blood from thick to thin.

Reactive lymphocytosis Distinguishing reactive lymphocytes from lymphoma cells can be challenging, but several key features should be kept in mind. Leukocytosis is defined as an elevation of the WBC count for the patient's age.


Reactive neutrophilia neutrophilic leukemoid reaction results from an increased production of neutrophils, demargination process of neutrophils entering the peripheral circulation from areas of intravascular marginated neutrophil pools , or a decreased egress of neutrophils from the peripheral circulation to the tissues. Most often leukocytosis is the result of the presence of an infection , usually caused by pyogenic pus-producing organisms such as Streptococcus , Staphylococcus , Gonococcus , Pneumococcus , or Meningococcus.

Typically, leukocytes are counted using microscopy. Am J Surg Pathol 29 Blood diseases osteonecrosis In bone disease: Archived copy as title Articles needing additional references from January All articles needing additional references All articles with unsourced statements Articles with unsourced statements from January First, the age of the patient helps to focus the differential diagnosis.

Eo sinophilic leukocytosis often accompanies allergic and drug reactions but may occasionally be due to hypereosinophilic syndrome or eosinophilic leukemia, both of which are rare.

Frequency of lymphoma types, patterns, blood involvement and discordance with other sites in specimens. Leukocytosis is white cells the leukocyte count above the normal range in the blood. Meticulous supportive care should be provided to all neutropenic patients.