Peripheral blood smear: Difference between revisions

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;Burr cells versus spur cells

File:Micrograph of an echinocyte on a peripheral blood smear.jpg|'''Burr cell''' (echinocyte)

File:Human blood film with acanthocytes 02.jpg|'''Spur cell''' (acanthocyte)

;Intraerythrocytic findings

File:Micrograph of a red blood cells with an overlying platelet on a peripheral blood smear.jpg|When seeing what appears to a platelet overlying a red blood cells (as pictured), confirm that there is a halo.

File:Human blood film with babesia.jpg|Otherwise, make sure it is not '''babesia''' (pictured) or malaria (images below).

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File:Blood stages of P. falciparum over 48h.jpg|'''Malaria''', showing appearance at different intraerythrocytic blood stages.

File:Thick blood film with Plasmodium falciparum rings and schizonts.png|If '''malaria''' is suspected, also make a thick blood film.

[[File:Monoblast, promonocyte and monocyte.jpg|thumb|400px|Comparison of monoblast, promonocyte and monocyte. {{further|Suspected blasts on peripheral blood smear}}]]

A common practice is to evaluate at least 100 white blood cells. Look for:

File:Myeloblast with Auer rod.jpg|thumb|'''Blast cells''', generally having large nucleus, immature chromatin, a prominent nucleolus, scant cytoplasm and few or no cytoplasmic granules. This example has an Auer rod (to the left of the nucleus). {{further|Suspected blasts on peripheral blood smear}}

File:Hypersegmented neutrophil.jpg|'''Hypersegmented neutrophils'''. This is abnormal when more than half of neutrophils have at least 4 segments, or more than 5% of neutrophils have more than 5 segments.<ref name="Glassy 1998 p. ">{{cite book | last=Glassy | first=Eric | title=Color atlas of hematology : an illustrated field guide based on proficiency testing | publisher=College of American Patholgists | publication-place=Northfield, Ill | year=1998 | isbn=978-0-930304-66-9 | oclc=40976106 | page=}}</ref>

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  |last1=Nozaka |first1=Hiroyuki

  |last2=Kushibiki |first2=Mihoko

! Type II<br />(plasma cell-like) - Most common

! Type III<br />(lymphoblast-like)

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! Size

| Azurophilic granules (±)

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