Rbc

Question 1

Abnormal variation in RBC volume or diameter

Answer 1

Anisocytosis

Question 2

Large RBC (.8 mm in diameter), MCV . 100 fL

Answer 2

Macrocyte

Question 3

Large oval RBC

Answer 3

Oval macrocyte

Question 4

Small RBC (,6 mm in diameter), MCV , 80 fL

Answer 4

Microcyte

Question 5

Abnormal variation in RBC shape

Answer 5

Poikilocytosis

Question 6

Small, round, dense RBC with no central pallor

Answer 6

Spherocyte

Question 7

cigar-shaped

Answer 7

Elliptocyte

Question 8

egg-shaped

Answer 8

ovalocyte

Question 9

RBC with slit-like area of central pallor

Answer 9

Stomatocyte

Question 10

Thin, dense, elongated RBC pointed at each end; may be curved

Answer 10

Sickle cell (depranocyte/menisocyte)

Question 11

RBC with hemoglobin concentrated in the center and around the periphery resembling a target

Answer 11

Target cell (codocyte)

Question 12

Fragmented RBC caused by rupture in the peripheral circulation

Answer 12

Schistocyte (schizocyte)

Question 13

RBC fragment in shape of a helmet

Answer 13

Helmet cell (keratocyte)

Question 14

Small, dense RBC with few irregularly spaced projections of varying length

Answer 14

Acanthocyte (spur cell)

Question 15

RBC with blunt or pointed, short projections that are usually evenly spaced over the surface of cell; present in all fields of blood film but in variable numbers per field‡

Answer 15

Burr cell (echinocyte)

Question 16

RBC with a single pointed extension resembling a teardrop or pear

Answer 16

Teardrop cell (dacryocyte)

Question 17

Dark blue-purple, fine or coarse punctate granules distributed throughout cytoplasm

Answer 17

Basophilic stippling

Question 18

Dark blue-purple dense, round granule; usually one per cell; occasionally multiple

Answer 18

Howell-Jolly body

Question 19

Round, dark blue-purple granule attached to inner RBC membrane

Answer 19

Heinz body

Question 20

Irregular clusters of small, light to dark blue granules, often near periphery of cell

Answer 20

Pappenheimer bodies‡

Question 21

Rings or figure-eights

Answer 21

Cabot ring

Question 22

Composition of Inclusion:

Basophilic stippling

Answer 22

Precipitated RNA

Question 23

Composition of Inclusion:

Howell-Jolly body

Answer 23

DNA (nuclear fragment)

Question 24

Composition of Inclusion:

Heinz body

Answer 24

Denatured hemoglobin

Question 25

Composition of Inclusion:

Pappenheimer bodies

Answer 25

Iron

Question 26

Composition of Inclusion:

Cabot ring

Answer 26

Mitotic spindle remnant