civil forensic

Chapter 68

Jiang Yuan did not go to dissect the body immediately.

Now, the first thing to do is to judge the time of death.

The most familiar to the public is the body temperature, but that is for the newly dead body.When the corpse was at the scene, a thermometer had already been inserted into the anus, but it was useless.

Judging criteria other than body temperature are all statistical summaries.

For example, the skin of the corpse in front of him has swollen and shrunk, and at the same time, the stiffness has also eased. Looking at the skin that has fallen off in many places during the transportation, Jiang Yuan made a rough judgment: "The recent water temperature is about 20 degrees. The time should be within 2 to 5 days?"

Judging the time of death of a corpse, especially the exact time of death, is very difficult. It can even be said that it is the most likely to make mistakes in forensic work.

In many TV series or movies, the forensic doctor who can give the time of death in hours at a glance is either extremely strong, or can only be explained by the plot.

Forensic doctors in reality can give a relatively accurate time of death, such as 12 to 24, or 4 to 8 hours, when facing a corpse within 6 hours, up to 12 hours. To accurately judge the time, many favorable conditions are needed.Misjudgment is nothing new.

An extreme example is Professor Bass of the University of Kansas in the United States in 1977. He identified a corpse shot in the head. Because the muscles were well preserved and had a healthy pink color, Bass concluded that the dead body was within a year. , but in fact, the body belonged to Colonel William Shay, who died in the Civil War, and the body was preserved in a sealed lead coffin, so it was the body in 1864, which was 113 years different from the time of death estimated by Professor Bath.

Bass thus created what is known as a "corpse farm," but it still doesn't quite solve the problem of time of death.

Many forensic doctors will make mistakes in the time of death, but the judgment of the time of death will greatly affect the investigation.

Jiang Yuan gave a time of 2 to 5 days, in Wu Jun's view, it was quite pertinent.

After recording Wu Jun's certified answers in his notebook, Jiang Yuan stood up straight and examined the corpse on the dissection table.

Jiang Yuan has done normal autopsy several times, and basically opened three chambers every time.

And after the three chambers are opened, generally speaking, the cause of death should be found.

Occasionally, I hear that there is a negative case, that is, a corpse for which the cause of death cannot be found in the popular sense. After checking the limbs and other positions, there will often be an answer.

However, none of the half corpses that Jiang Yuan faced today were left behind.It is equivalent to saying that this corpse was not left where a normal autopsy would be done.

To be honest, when Wu Jun handed the knife to Jiang Yuan, he had nowhere to start.

In his opinion, there is not much to pay attention to in the autopsy of this kind of corpse.

"I'll start from the pelvic cavity." Jiang Yuan said softly after straightening the corpse.

Wu Jun said "En".

In the pelvic cavity of a normal male corpse, there are bladder, testis, prostate, vas deferens, urethra and so on.However, today's corpse is already a mess between the legs. Not only is it swollen and decayed, but it is also likely to have been eaten by fish in the river, or pulled out by the organs in the abdominal cavity.In short, organs in the usual sense are not preserved.

Jiang Yuan still followed the normal procedure to separate the soft tissue from the retropubic peritoneum, then cut the peritoneum, and observed the situation in the pelvic cavity.

Nothing.

Jiang Yuan didn't say a word, and continued to follow the local anatomy process, drawing all the way down.

Forensic dissection is sometimes like solving a problem.The problem solver wants a result, but the idea of ​​solving the problem is not there from the beginning.

At this time, you can only list all the conditions, and then think according to the conditions.

This is also the big difference between forensic medicine and doctors.

As a doctor, you often have to plan well before the operation. There is no such thing as opening the abdominal cavity and thinking while searching.

However, forensic medicine does not have as many inspection conditions as doctors. Forensic medicine often adopts the simplest and most direct solution-turn it out and look.

Only after seeing the clues can one follow the clues and draw further conclusions.

Jiang Yuan and Wu Jun were busy cooperating with each other, staring at the dissection table without blinking.

What they expect is to be able to see some characteristics, such as signs of surgery, such as bladder surgery, or varicose vein surgery, which can further narrow the scope.

Or, the victim has a sports injury, such as an ankle scar, which is also a good entry point.

Of course, it is best to have a prosthetic, such as an artificial foot, and then bring a number, contact the relevant company, and immediately get the name, age and other information.

"The color here, isn't it?" Jiang Yuan suddenly stopped the knife and put it aside.

Wu Jun was slightly old-eyed, and looked over with a frown.

"Here... the lymph nodes have turned black." Jiang Yuan turned over the skin of the corpse, and then pushed away the muscles that interfered with judgment, exposing the lymphatic vessels in the thighs.

The lymph nodes that should have been white or milky yellow turned out to be bluish black at this time.

Wu Jun took a closer look, and couldn't help nodding: "It has indeed turned black, take a sample."

"Okay." Jiang Yuan cut a little bit into the inspection material bag, then opened the outer skin, and said: "It should not be cancer, there is no obvious swelling, and there is no characteristic of cancer cells."

"Well, young people in their twenties have a lower risk of cancer." Wu Jun pressed the lymph nodes twice, frowned and said, "It really doesn't look like a lesion..."

Jiang Yuan said, "Could it be a tattoo?"

"Tattoos?" Wu Jun's brain turned a little slower, and Jiang Yuan reminded him, so he couldn't help nodding: "When tattooing, the dermis was pierced. It's possible... But, there are no tattoos on the outside."

"The tattoo has been washed off, but the color of the lymph is still there." Jiang Yuan pulled the dead man's skin over again, and said, "Look carefully, you can actually see some traces, it's soaked too badly."

Wu Jun nodded slowly. For forensic doctors, the tattoo itself is a very good characteristic point.Legend has it that everyone in the U.S. Marine Corps has tattoos, so that the forensic doctor can easily identify the corpse...

However, Wu Jun is not very familiar with the matter of tattoo removal, and asked: "Can it be washed so clean now?"

"Laser tattoo removal, there is a certain probability." Jiang Yuan pointed to the leg of the corpse again, and said: "The area of ​​his tattoo is not large. Looking at it now, you can see a little trace. It is relatively clean and there is no scar , it should have been washed in the hospital, maybe there is a record of this.”

"You have a good idea. I'll call Team Huang. There are not many people who use lasers to remove tattoos in the hospital. They happen to be tattooed on the thighs, so there shouldn't be many." Wu Jun took off his gloves and washed them a little. Just start calling.

When the phone was dialed, Wu Jun shouted to the other end of the phone: "...it's at the Fengshi acupoint, where your hand naturally hangs down and your fingertips touch the thigh. A tattoo the size of a dime, preliminary estimate."

(End of this chapter)