A scar that grows beyond the boundaries of the original surgical wound, persists indefinitely, and shows broad bands of thick hyalinised collagen on histology is best described as a:

• A Hypertrophic scar
• B Desmoid tumour
• C Widened scar
• D Keloid ✓

Explanation

A keloid invades beyond the original wound margins, does not regress, and recurs even after excision unless adjuvant therapy such as intralesional steroid is given. Histologically it shows thick, eosinophilic, hyalinised collagen bundles. A hypertrophic scar remains within the wound limits, often regresses with time, and shows more organised collagen, which is the key distinction from keloid. A desmoid tumour is a deep fibromatosis unrelated to cutaneous scarring.

Reference: Robbins and Cotran Pathologic Basis of Disease, 10th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.