rouleau

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rouleau

 [roo-lo´] (Fr.)
an abnormal group of red blood cells adhering together like a pile of coins.
Human red blood cells arranged in rouleaux. From Dorland's, 2000.

rou·leau

, pl.

rou·leaux

(rū-lō'),
An aggregate of erythrocytes stacked like a pile of coins. Rouleau formation commonly indicates an increase in plasma immunoglobulin.
[Fr. spool, cylinder, fr. rouler, to roll, fr. L.L. rotulo, fr. rota, wheel]

rouleau

/rou·leau/ (roo-lo´) pl. rouleaux´   [Fr.] an abnormal group of red blood cells adhering together like a roll of coins.

rouleaux

[ro̅o̅lō′] sing. rouleau
Etymology: Fr, cylinder
red cells in a microscopic roll or "stack-of-coins" formation that may be caused by abnormal proteins, as in multiple myeloma or macroglobulinemia. Compare hemagglutination. See also erythrocyte sedimentation rate.
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Rouleaux

rou·leau

, pl. rouleaux (rū-lō')
An aggregate of erythrocytes stacked like a pile of coins.
[Fr. spool, cylinder, fr. rouler, to roll, fr. L.L. rotulo, fr. rota, wheel]

rouleau

A stacked collection of red blood cells, like a roll of coins. Rouleau formation suggests an increase in immunoglobulins in the blood.

rouleau

pl. rouleaux [Fr.] a roll of red blood cells resembling a pile of coins.

rouleau formation
occurs when there is increased fibrinogen concentration or other changes in plasma proteins. It will disappear when blood is diluted with saline.