MCQ – 89523

A doctor notices the following marbling pattern during an autopsy. Which of the following statements is true regarding this finding?

A.	It is due to sulphaemoglobin pigment
B.	Develops within 12 Hrs
C.	It is non bacterial
D.	It is associated with lightning case

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Correct Answer » A Explanation

The image shows greenish-black branching discoloration along the superficial veins — a classic finding known as “marbling” (or vascular marbling), seen during putrefaction in postmortem bodies.

• Marbling refers to greenish-black discoloration that follows the course of superficial veins, producing a lace-like or marbled pattern.

• Caused by the spread of anaerobic bacteria (mainly Clostridium perfringens) through the blood vessels.

• These bacteria produce hydrogen sulfide, which reacts with hemoglobin to form sulfhemoglobin, giving the dark color.

Timing of Appearance:

• Begins around 12 hours after death, usually seen earlier in warm climates.

• More pronounced by 24–36 hours, especially over the abdomen and limbs.

• Considered an early sign of putrefaction.

Significance:
– Useful in estimating the postmortem interval (PMI).
– Provides clues about body position and time since death.

Other Postmortem Changes:
– Rigor mortis: Stiffening of muscles after death.
– Algor mortis: Cooling of the body postmortem.
– Livor mortis: Pooling of blood in dependent areas of the body.

Postmortem Marbling