My largest nodule two years ago was spiculated. During my bronchoscopy the doctor did a biopsy and it was non-malignant. Eight months later the CT scan showed that nodule to be somewhat smaller and then eight months after that the CT scan showed that spiculated nodule had calcified. I don't fully understand it but calcifying is a very good thing. So in my experience spiculated does not translate to malignancy. The only way to find out would be to do a biopsy