Is this case Histoplasma capsulatum?
Is there any other possibilities for the disease?
Yes.  At 37°C, Histoplasma capsulatum usually doesn't form hyphae.


Were the hyphae branching, like this?

If "conidia with spores in radiating columns" means the pictures below, 
We have enough to say that this is not a case of Histoplasma capsulatum and there is definitely another possibility for this disease.
Conidia with radiating chains of spores is pathognomonic for aspergillosis.