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RxPG :: View topic - Cause of contusion with central pale area  
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Author Message

Aparna92
Aim NEET-PG

Help: cause of contusion with central pale area
A 32 yr old female brought to casualty with a H/o assault by her husband, the previous day. O/E: there were contusions, 1 each on the outer aspect of left thigh and back of right leg (7*2.5 cm and 8.5*2.5 cm respectively). The contusions had a centrak pale area which were about 0.5 cm wide throughout.

What is the mechanism of production of these injuries?
What is the cause of the central pallor?

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sanpas


Forensic Medicine
What the case is describing is a classical tram-line pattern of bruise, caused by trauma due to being struck by a rod (or similar cylindrical instrument). central pallor is due to contact/pressure pallor ( vessels get crushed and fused)


sanpas


central pallor
The rod forcibly pushes tissue downwards resulting in rupture of vessels on either side due to stretching, the vessels under the base of dent are compressed but not injured


sanpas


central pallor
The rod forcibly pushes tissue downwards resulting in rupture of vessels on either side due to stretching, the vessels under the base of dent are compressed but not injured


Aparna92
Aim NEET-PG

Thank you

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