What does suspicious for malignancy mean?

1. Arousing or apt to arouse suspicion; questionable: suspicious behavior.
2. Tending to suspect; distrustful: a suspicious nature.
3. Expressing suspicion: a suspicious look.

"Suspicious for malignancy" is the terminology used by pathologists (like me) and other physicians to describe the lesion which is very worrisome for the cancer including carcinoma, sarcoma, melanoma or lymphoma. Sometimes we cannot make the definite diagnosis yet until more confirmative diagnostic measures are performed but we do feel strongly about the malignancy of lesion. We make the diagnosis and usually suggest further evaluation.