In alleged history of gunshot injury, there is burning, blackening, tattooing around the wound. The injury is:

Explanation

## Correct Answer: B. Close shot entry wound A close-range entry wound exhibits three pathognomonic features: burning, blackening, and tattooing (stippling). These occur because the projectile travels at high velocity but the muzzle remains close enough (typically <1 metre) that unburned and partially burned gunpowder particles are ejected from the barrel along with the bullet. The burning results from hot gases and incandescent particles; blackening from soot deposition on the skin; and tattooing from the impact of unburned powder grains that abrade the epidermis without penetrating it. These features are diagnostic of a **close-range entry wound** and are absent in exit wounds, which show bevelling and tissue eversion. In Indian forensic practice (as per Reddy's Forensic Medicine), the presence of all three features—burning, blackening, and tattooing—together is pathognomonic for entry wounds at close range. Exit wounds, by contrast, show a larger diameter, bevelled edges (with the bevel on the internal surface), and tissue eversion, but lack powder tattooing because the projectile exits before powder particles reach the wound. Distant shots (>1 metre) show none of these powder-related features. ## Why the other options are wrong **A. Close shot exit wound** — Exit wounds do not show tattooing or blackening from powder. Although a close-range exit wound may show some soot if the bullet re-enters the barrel tract, the classic triad of burning, blackening, and tattooing is exclusive to entry wounds. Exit wounds are characterised by bevelling (internal bevel), tissue eversion, and a larger diameter. This is a common NBE trap pairing 'close shot' with the powder features. **C. Distant shot exit wound** — Distant shots (>1 metre) produce no powder tattooing, burning, or blackening because unburned powder does not travel that far. Additionally, this is an exit wound, which lacks the entry-wound features entirely. The combination of 'distant' and 'exit' eliminates all three diagnostic features, making this doubly incorrect. **D. Distant shot entry wound** — Although this is an entry wound, distant shots (>1 metre) produce no powder tattooing, burning, or blackening because the powder particles dissipate before reaching the target. Distant entry wounds show only the entrance hole without any powder-related features. Students may confuse 'entry wound' with the presence of powder signs, but distance is the limiting factor. ## High-Yield Facts - **Tattooing (stippling)** occurs only in close-range entry wounds (<1 m) from unburned powder grain impact; it does NOT occur in exit wounds or distant shots. - **Burning and blackening** around a gunshot wound indicate soot deposition from hot gases and incandescent particles—diagnostic of close-range entry wounds only. - **Exit wounds** show bevelling (internal bevel), tissue eversion, and larger diameter; they NEVER show tattooing or soot, even at close range. - **Distance classification**: <1 m = close range (powder features); 1–10 m = intermediate (soot only, no tattooing); >10 m = distant (no powder features). - **Entry vs. exit**: Entry wounds are smaller, punched-in, with external bevel; exit wounds are larger, everted, with internal bevel—independent of range. ## Mnemonics **BEST for Entry Wounds** **B**urning, **E**xternal bevel, **S**maller, **T**attooing (close range only). Exit wounds show the opposite: larger, internal bevel, eversion, no tattooing. **Powder Features = Close Entry** If you see **burning, blackening, or tattooing**, think **close-range entry wound**. Powder never reaches exit wounds or distant targets. Use this as a one-second rule-out. ## NBE Trap NBE pairs 'close shot' with 'exit wound' to trap students who remember powder features but forget that tattooing is exclusive to entry wounds. The presence of burning and blackening may make students think 'close range' and then default to the first 'close' option without checking whether it is entry or exit. ## Clinical Pearl In Indian medicolegal practice, the presence of tattooing is a critical finding that often determines whether a death is homicide or suicide. A close-range entry wound with tattooing rules out distant shooting and helps establish the shooter's proximity—crucial for criminal investigations and courtroom testimony in Indian courts. _Reference: Reddy's Forensic Medicine (3rd edn), Ch. 5: Ballistics and Gunshot Wounds; Parikh's Textbook of Medical Jurisprudence, Forensic Medicine and Toxicology, Ch. 6_