Chapter 2303: Chapter 2303: Covering for Yingying
"Teacher, can we let the students from the neighboring school join the discussion? It doesn’t always have to be just me talking," answered Duan Sanbao.
His voice, when listened to carefully, had a quality like sticky rice—soft and slow, accompanied by bright eyes with a hint of sweetness, much like a diligent kindergartener.
Truly an incredibly cute guy.
When this person first started presenting his academic opinions, Zhao Zhaowei and the others could already sense: his reluctance to answer was not due to any humble or low-key manner.
Zhao Zhaowei furrowed his brows, tugged on Zhang Desheng’s shirt, and said, "You say something, or let Shihua go first. Damn, this guy must have heard something from somewhere. Look at him, his eyes are always fixed on Yingying."
Absolutely not fooled by this classmate’s cuteness akin to a small child. Zhao Zhaowei swore, everyone in their Guoxie group, not just Student Xie, are all the mischievous ones Teacher Ren mentioned.
Hearing the Guoxie boys’ words, Duan Sanbao lowered his head, tapping his pen on the paper, continuing his ostrich act.
Having had a confrontation before with Beidu’s genius Song Xueling, Zhao Zhaowei was more convinced of his intuition: this guy is pretending, ready to extract information from Student Xie.
"Are you guys joining?" Cheng Yuchen turned his head to ask the Guoxie students.
The Guodu crowd jeered, "You all speak up, join in the discussion. Don’t hold back, it’ll suffocate you."
With Zhao Zhaowei’s urging, Zhang Desheng was the first to step up and said loudly, "I’ll say one."
The scene fell silent.
Guoxie’s hearts were pounding, while the eyes of the Guodu crowd seemed to be waiting for them to falter.
Come on, Zhang Desheng. — Zhao Zhaowei and the others cheered mentally.
Hearing his classmates’ encouragement, Zhang Desheng went from not nervous to very nervous, lowered his voice after a few throat clearings, and said, "On the film, you can see the obtuse cardiophrenic angle, which might indicate a pulmonary infection, lymph node enlargement, or as he said, possibly a heart issue. It’s unlikely to be fat pad because this patient is young and not overweight."
The human diaphragm shows as an arch-like dome in the frontal and lateral chest X-ray. This arch and the cardiac silhouette form the cardiophrenic angle, which is actually the angle between the medial lung and the heart. If you open up the anatomy, since the human body is a three-dimensional space, the definition of this cardiophrenic angle becomes more complex. The pericardium surrounds the heart on the outside, with the lungs on both sides, the chest wall in front and back, making the cardiophrenic angle a three-dimensional angle between the pericardium and either the lung or the chest wall.
Doctors looking at chest X-rays can’t see the three-dimensional space inside the human body, they can only make rough judgments and sum up a set of empirical conclusions.
The medical consensus is: for a normal person, the cardiophrenic angle displayed on the chest X-ray is sharp. If it becomes obtuse, it might be due to nearby inflammatory tissue exudate causing the shadow to enlarge, making pulmonary infection and lymph node enlargement both possible. Another possibility is the enlargement of the heart, causing the cardiac silhouette to enlarge and the angle to naturally become obtuse. For overweight individuals, the presence of excess fat can also lead to this shadow enlargement being misdiagnosed as heart disease.
Student Zhang Desheng might have provided another overview of how a doctor reads a patient’s chest X-ray.
When doctors review examination reports, it’s not only about focusing on their suspected area, they must also clearly examine all other aspects to determine if the patient has any other health issues.
Reading the most common frontal and lateral chest X-rays requires identifying the lungs, heart, mediastinum, pleura, diaphragm, and ribs.
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