Sigma Receptor Scintigraphy with N-[2-(1′-Piperidinyl)Ethyl]-3-¹²³I-Iodo-4-Methoxybenzamide of Patients with Suspected Primary Breast Cancer: First Clinical Results

P-¹²³I-MBA scintigraphy in 2 patients with primary breast cancer of invasive ductal type. Tumor was localized in laterosuperior quadrant of right breast (A) and left breast (B).

Right (A) and left (B) planar breast images of patient presenting bilateral uptake of P-¹²³I-MBA in superior part of breasts. Focal accumulation in left breast (B) did not correspond to known lesion on mammography and could not be confirmed as malignant after follow-up.