Brown color of contusion is due to

NEET PG
#1

Brown color of contusion is due to -
a) Haematodin
b) Reduced hemoglobin
c) Haemosiderin
d) Bilirubin
Correct Answer - C
Ans. is ‘c’ i.e., Haemosiderin
Color change and age of bruise (Contusion)
After a bruise has appeared, it tends to get smaller from periphery to
center and passes through a series of colour changes. These are
due to disintegration of RBCs by hemolysis and breakdown of
hemoglobin into the pigments haemosiderin, haematodin and
bilirubin changes are : -

  1. At first : Red (oxyhemoglobin)
  2. Few hours to 3 days : blue (reduced hemoglobin)
  3. 4th day : Bluish-black to brown (haemosiderin)
  4. 5-6 days : Greenish (haematodin)
  5. 7-12 days : Yellow (Bilirubin)
  6. 2 weeks : Normal (absorption of pigment)