Gallium 67 Concentration In Human Breast Milk

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To the Editor.— In a previous article in The Journal, the use of tumor-specific gallium citrate Ga 67 for the detection of neoplasms by photoscanning was reported.1 As with any new clinical scanning procedure, an understanding of the physiologic behavior and normal anatomic distribution of the radionuclide is important for proper interpretation of the studies. We have observed the unusual localization of gallium 67 in the breasts of a 25-year-old postpartum woman, in whom the diagnosis of Hodgkin's disease had been made one week prior to delivery by biopsy of an enlarged cervical lymph node. Three weeks postpartum, the patient received an intravenous dose of 3.0 millicuries of gallium citrate Ga 67. Forty-eight hours later, a whole-body scan was performed which showed uptake of the tracer by both breasts (Figure). The patient had not nursed her infant, nor had she received hormones to suppress lactation. She was able to

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