spiculations on mammogram

The radiologist and my doctor easily felt a lump.  Mammogram showed spiculations. Radiologist said tissue dense and couldn't measure--couldn't define area.  Suggested MRI vs. biopsy as next best step for accurate diagnosis.
This all happened today, so upset and looking for any info or guidance.  Tx, Groceries

[mamaboulet]

Did your mammogram report include a BIRADS number? A spiculated mass is of concern because an irregular border on a mass has a higher likelihood of being malignant. Not all spiculated masses are cancerous though, as fat necrosis, a benign condition, can also present as a spiculated mass.
Because of your dense breasts, they are having trouble getting a good image. An ultrasound or MRI might help with that. If more imaging shows that you indeed have a spiculated mass, then they are definitely going to recommend biopsy. A biopsy is the only way to confirm the presence or absence of cancer in a suspicious mass. Good luck! Maybe it will just turn out to be fat necrosis the way mine did.