Hemangiopericytoma is a rare neoplasm, accounting for 1% of all orbital tumors (1). Patients typically present in the 5th decade of life (mean age, 41 years), and the tumor has no gender predilection (8,9). Proptosis and palpable mass are common clinical manifestations.
A band cell (also called band neutrophil or stab cell) is a cell undergoing granulopoiesis, derived from a metamyelocyte, and leading to a mature granulocyte. It is characterized by having a nucleus which is curved, but not lobar.The term band cell implies a granulocytic lineage (e.g. neutrophils).n increase in band neutrophils typically means that the bone marrow has been signaled to release more WBCs and increase production of WBCs, also known as a left shift . Most often this is due to infection or inflammation in the body.
Definition of band. 1  1 : something that confines or constricts while allowing a degree of movement. 2  2 : something that binds or restrains legally, morally, or spiritually. 3  3 : a strip serving to join or hold things together: such asa : belt 2b : a cord or strip across the back of a book to which the sections are sewn.