Please carefully study the following patient case summary, conduct a comprehensive and in-depth diagnostic analysis, and clearly provide the final diagnosis result.

{case}

---

**Format to Follow:**

```
### Resoning:
[Please sort out your thinking process step by step, with each logical step in a separate paragraph.]
<step 1> Specific thinking content of this step
<step 2> Specific thinking content of this step
...
<step n> Specific thinking content of this step

### Answer:
[Just output the diagnostic result without any other explanation.]
```