[2S] UNIT 7.1 Erythrocytic Morphology & Associated Diseases (Meme)

Question 1

normal erythrocytes
that are approximately the
same size as the nucleus of a small lymphocytes.

Answer 1

NORMOCYTES

Question 2

RBCs greater than 8 um in diameter; MCV greater than 100 fL

Answer 2

MACROCYTES

Question 3

RBCs less than 6 um in diameter; MCV less than 80 fL

Answer 3

MICROCYTES

Question 4

Seen in non-
megaloblastic anemia of liver disease or accelerated
erythropoiesis; also seen
in normal newborns

Answer 4

MACROCYTES

Question 4

Seen in megaloblastic anemias, such as B12/folate deficiency

Answer 4

MACROCYTES

Question 5

Variation in RBC size, indicating a heterogeneous
RBC population (dimorphism)

Answer 5

ANISOCYTOSIS

Question 5

Seen in IDA, thalassemias,
sideroblastic anemia, and anemia of chronic disease

Answer 5

MICROCYTES

Question 6

Correlates with RDW (red
blood cell distribution width),
especially when the RDW
exceeds 15.0%

Answer 6

ANISOCYTOSIS

Question 7

General term to describe
variation in shape

Answer 7

POIKILOCYTOSIS

Question 7

Seen post-transfution, posttreatment for a deficiency (e.g., iron), presence of two concurrent deficiencies (e.g., iron and vitamin B12), an idiopathic sideroblastic anemia

Answer 7

ANISOCYTOSIS