Chapter 68: Dark Blue Ba

Jiang Yuan did not dissect the body immediately.

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

The most familiar thing to the public is the body temperature, but that is for corpses that have just died. When the body was at the scene, a thermometer had been inserted into the anus, but it was useless.

Other judgment criteria besides body temperature are, in fact, a statistical summary.

For example, the skin of the body in front of him has swollen and wrinkled, and the rigor mortis has also eased. Looking at the process of transportation, many parts of the skin have fallen off. Jiang Yuan roughly judged: "The recent water temperature is about 20 degrees. The time of death should be within 2 to 5 days?"

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

In many TV dramas or movies, forensic doctors who can give the time of death in hours at a glance are either extremely powerful or can only be explained by the plot.

In reality, forensic doctors can give a relatively accurate time of death, such as 4 to 8, or 6 to 12 hours, when facing a corpse within 12 hours or at most 24 hours. However, for a corpse that has been dead for more than a day, many favorable conditions are needed to accurately judge the time. And misjudgment is nothing new.

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

Bass therefore created the famous "corpse farm", but this still cannot completely solve the problem of the time of death.

Many forensic doctors will make mistakes in the time of death, but the judgment of the time of death is very influential in the investigation.

Jiang Yuan gave a time of 2 to 5 days, which is quite pertinent in Wu Jun's opinion.

After recording the answer certified by Wu Jun in the notebook, Jiang Yuan stood up and examined the corpse on the dissection table.

Jiang Yuan had done normal autopsies several times, and basically opened three cavities every time.

After opening the three cavities, the cause of death should be found.

Occasionally, we hear about negative cases, which means that the cause of death cannot be found in the popular sense. After checking the limbs and other parts, we often get the answer.

However, the half corpse Jiang Yuan faced today did not have any of the three cavities left. In other words, the corpse did not leave any of the parts that should be done in a normal autopsy.

To be honest, Wu Jun handed the knife to Jiang Yuan, and he was a little confused about where to start.

In his opinion, there were not many things to pay attention to in the dissection of this kind of corpse.

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

Wu Jun said "yes".

The pelvic cavity of a normal male corpse contains the bladder, testicles, prostate, vas deferens, urethra, etc. However, the body today was in a mess between the legs. Not only was it swollen and rotten, but it was also likely to have been eaten by fish in the river, or pulled out with the organs in the abdominal cavity. In short, no organs in the usual sense were left.

Jiang Yuan still followed the normal process, separating the soft tissue outside the peritoneum behind the pubic bone, then cutting the peritoneum to observe the situation in the pelvic cavity.

Nothing was found.

Jiang Yuan did not say anything, and continued to follow the process of local dissection, scratching all the way down.

Doing forensic dissection is sometimes like solving a problem. The problem solver wants a result, but the idea of ​​solving the problem is not available at the beginning.

At this time, you can only list all the conditions and then think based on the conditions.

This is also a big difference between forensic doctors and doctors.

Doctors often have to make plans before the operation, and they don’t say to open the abdominal cavity and think while searching.

But forensic doctors do not have as many examination conditions as doctors. Forensic doctors often use the simplest and most direct solution - turn it out and see.

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

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

They expected to see some characteristics, such as surgical marks, such as bladder surgery or varicose vein surgery, which could further narrow the scope.

Or, if the victim had sports injuries, such as ankle scars, it would also be a good entry point.

Of course, it would be best to have a prosthesis, such as an artificial foot, with a number, and contact the relevant company to get information such as name and age immediately.

"The color here is wrong." Jiang Yuan suddenly stopped the knife and put it aside.

Wu Jun was a little dazed and frowned as he looked over.

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

The lymph, which should have been white or milky yellow, turned out bluish black at this time.

Wu Jun leaned in to take a closer look and nodded: "It has indeed turned black, take a sample."

"Okay." Jiang Yuan cut a little and put it in the sample bag, then turned over the skin outside and said: "It should not be cancer, there is no obvious swelling, and there are no characteristics of cancer cells."

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

Jiang Yuandao: "Could it be a tattoo?"

"Tattoo?" Wu Jun's mind turned a little slower. When Jiang Yuan reminded him, he couldn't help but nodded: "It's possible that the dermis was pierced during the tattoo... However, there is no tattoo outside."

"The tattoo has been washed away, but the color of the lymph is still there." Jiang Yuan pulled some of the deceased's skin over and said, "If you look carefully, you can actually see some marks. It was too badly soaked."

Wu Jun nodded slowly. For forensic doctors, the tattoo itself is a very good characteristic point. It is said that everyone in the United States Marine Corps has tattoos, not just to make it easier for forensic doctors to identify the bodies...

However, Wu Jun was not very familiar with tattoo removal and asked, "Can it be washed so cleanly now?"

"There is a certain probability of laser tattoo removal." Jiang Yuan pointed to the leg of the corpse and said: "The area of ​​​​his tattoo is not large. Looking at it now, you can see a little trace. It is relatively clean after washing, so it is nothing. The scar must have been washed in the hospital, there may be records of this.”

"You have a good idea. I'll call Team Huang. The ones who use laser to remove tattoos in the hospital happen to be removing tattoos on the thighs. There shouldn't be many of them." Wu Jun took off his gloves and washed them a little. , and started calling.

When the call was dialed, Wu Jun was heard shouting to the other end of the phone: "...it's at the Fengshi point, which is where your hand naturally hangs down and your fingertips touch the thigh. That point is a little bit toward the leg surface. A tattoo as big as a coin, a preliminary estimate.”