+ Monoclonal Gammapathy of Undetermined Significance (MGUS)
+ Other Lymphoproliferative Diseases
+ Histiocytoses
+ Histiocytosis X (Langerhans Cell Histiocytosis)
+ Letterer-Siwe Histiocytosis
+ Hand-Schüller-Christian Histiocytosis
+ Eosinophilic Granuloma
+ Histiocytic Sarcoma
+ Metastatic Infiltration of the Bone Marrow
+ Posttheraupetic a Posttransplant Hematopoietic Changes
+ Posttheraupetic Hematopoietic Changes
+ Restitution of Hematopoiesis
+ Persistent Alterations of Hematopoiesis.
+ Posttransplant Alterations of Hematopoiesis
+ Pathology of the Bone
+ Other Disorders
MPN unclassifiable (MPN-U)
This category comprises of all cases, which show clinical,
laboratory and morphological features of MPN, however do not meet the
diagnostic criteria of the above described MPNs.