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signo de Benassi

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15:46 Feb 15, 2003
This question was closed without grading. Reason: Other

Spanish to English translations [PRO]
Science / gunshot wounds, forensic evidence
Spanish term or phrase: signo de Benassi
debe encontrarse el ahumamiento macro y microscopico , lo que se conoce como signo de Benassi
Ellen Donohue
United States
Local time: 04:29

Summary of answers provided
5powder burns
4Benassi's sign
2blackening, powder burn, tattooing
Sheila Hardie



17 mins   confidence: Answerer confidence 5/5
powder burns

English example below. Spanish definition follows (this page does not admit 2 separate link entries).

Note added at 2003-02-15 16:05:53 (GMT)

Here\'s the Spanish definition (with photos, don\'t be shocked):

Note added at 2003-02-15 16:16:16 (GMT)

The Spanish page also contains an explanation for your question on Hoffman.

Local time: 10:29
Native speaker of: Native in EnglishEnglish
PRO pts in pair: 7629
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23 mins   confidence: Answerer confidence 2/5Answerer confidence 2/5
blackening, powder burn, tattooing

I think you might be able to use blackening or tattooing.






Al efectuar un disparo a muy corta distancia o bien con el cañón apoyado sobre la piel en una región anatómica donde exista un plano óseo subyasente (costillas, omóplato, tibia, cráneo, etc.), se producirá sobre la tabla externa del hueso un anillo de ahumamiento que permite el diagnóstico de "orificio de entrada" de proyectil de arma de fuego aún en ausencia de partes blandas.

Tal como muestra la fotografía, el signo se observa a simple vista no requiriendo de ningún tipo de ampliación, el ahumamiento se deposita sobre el periostio de la región y no desaparece con el lavado (salvo que se desprenda el periostio).

Existen diferentes clasificaciones relacionadas con la distancia a la que se efectuó el disparo, pero considero que las utilizadas por los americanos e ingleses reflejan con mayor veracidad los acontecimientos, es así qie encontramos disparos efectuados a :

* Distancia de contacto: cuando la boca de fuego del cañón se encuentra apoyada en forma laxa o firme contra la superficie cutánea.
* Distancia de contacto cercano: la boca de fuego del cañón se encuentra algo alejada de la piel, pero la distancia es tan pequeña que permite la presencia de un ahumamiento circundando el orificio de entrada, este tipo de disparos pueden ser efectuados en forma perpendicular a la piel o bien en forma angulada con lo que se observarán diferentes cacteíristicas en el ahumamiento.
* Distancia de rango intermedio: es aquel en el que la boca de fuego del arma se encuentra alejado de lapiel, pero aún lo suficientemente cerca como para que los productos de deflagración de la pólvora puedan producir un "tatuaje" sobre la piel desnuda.
* Distancia de disparo distante: las marcas observadas son las producidas únicamente por los efectos mecánicos del proyetil, es decir el anillo de Fisch.


Clasificación de las armas. Nociones de balística. Métodos de identificación; calibres más frecuentes. Caracteres del oriifio de entrada, del trayecto y del orificio de salida. Golpe de mina de Hoffman. ***Signo de Benassi***. Lesiones por escopeta. Zona de Fish; tatuaje, ahumamiento; distancia del disparo. 

Skin defect
Permanent cavity
Passing of the projectile through the skin (a).
Abraded margin
Abrasion collar, Marginal abrasion, Contusion ring, Abrasion ring
Forward motion of bullet indenting the skin and abrading the margin of entry wound (b).
High velocity centrefire rifle bullets tend to produce these rather than an abrasion ring.
Grey ring
Contact ring, Bullet wipe
Lubricant and debris on bullet surface wiped off onto the wound edge.
Smudging (c)
Fouling, Blackening
Deposition of soot from partially burnt gases.
Tattooing (c)
Involuntary tattooing, Stippling, Peppering
Unburned, partially burned and burning propellant grains abrading and embedding in skin (sine qua non of intermediate/ close/near range).
Singeing (c)
Hot gases from muzzle at close range
Muzzle impression
Muzzle contusion, Muzzle imprint
Skin impact against muzzle produced by discharge gases or temporary cavity formation in contact and near contact wounds

(a) Exit wound is typically larger and more irregular than entry due to bullet tumbling and deformation.

(b) May be absent in the palm of sole, high velocity centrefire rifle wounds from jacketed or semi-jacketed handgun bullets (usually high velocity) and re-entry wounds of axilla and scrotum. Typically absent from exit wounds, allowing their distinction from entry wounds. May be seen in "shored" exit wounds.

(c) The term "powder burns" is variably used to include one or more of these features.

Pseudo-powder tattooing
Skin marks mimicking tattooing produced by projectile fragments, intermediate target fragments, p-m insect bites, shotshell, packing, petechiae, suture marks etc
Material deposited on the skin micking soot, e.g. fingerprint dusting powder, haemorrhage, dried out wound exudate.


Muzzle-target distance
Wound characteristics
1. Contact (see below)
Muzzle in contact with body (or a very short distance - a few centimetres - from body)
Edges seared by gases and blackened by soot and propellant ("baked" into skin).

With or without a concentric or eccentric seared blackened zone around wound.

With or without soot deposition in a wider band around wound (can be wiped off).

Soot, propellant, vapourised bullet, primer and cartridge case metals and CO in/along wound track.
2 Close range. (intermediate, near)
Muzzle to target distance within about arms length i.e. 3 feet
sine qua non is individual, red-brown to orange-red propellant grain tattooing; eccentric if muzzle at angle to skin; may be blocked by hair or clothing; post mortem is moist grey or yellow.
3. Distant
Muzzle to target distance greater than about3 feet
produced by mechanical action of bullet penetration of skin only; ie. skin defect typically with abraded margin.

Sheila Hardie
Local time: 10:29
Native speaker of: Native in EnglishEnglish
PRO pts in pair: 1351
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639 days   confidence: Answerer confidence 4/5Answerer confidence 4/5
Benassi's sign

1971 Jan-Mar;4(1):46-7. [Benassi's sign: histopathologic confirmation of its
medico-legal value] [Article in French] Bonnet EF, Pedace EA. ... db=PubMed&list_uids=5108125&dopt=Abstract db=PubMed&list_uids=5108125&dopt=Abstract
Local time: 10:29
Native speaker of: Native in ItalianItalian
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