Brief Answer:
It is used to treat fungal infections.
Detailed Answer:
Hello Dear,
Thanks for posting your query on HCM.
Fluconazole is an antifungal agent and is used to treat fungal infections at various sites of the body.
In cancer patient also it is used mainly to prevent or treat fungal infections as these patients are prone to develop fungal infections due to lowered immunity.
I hope this answers your query.
Feel free to ask for any further queries.
Regards