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Prognostic Value of Axillary Lymphoscintigraphy in Breast Carcinoma Patients

Richard G. McLean and Güne N. Ege

Department of Nuclear Medicine, The Princess Margaret Hospital, Toronto, Ontario, Canada

Correspondence: For reprints contact: Günes N. Ege, MD, Dept. of Nuclear Medicine, The Princess Margaret Hospital, 500 Sherbourne St. Toronto, Ontario, M4X 1K9 Canada.

ABSTRACT

Axillary lymphoscintigraphy (AxLS) with bilateral interdigital injection of [^99mTc]antimony sulfide colloid carried out concurrently with internal mammary lymphoscintigraphy in 488 patients with breast carcinoma was evaluated. Patterns of radiocolloid distribution within the ipsilateral axilla and supraclavicular fossa were compared with similar features on the contralateral side to determine whether image characteristics (a) are significantly disrupted by prior surgery, (b) reflect the presence of metastases, and (c) can predict treatment failure. Interpretive criteria for AxLS were refined after correlation of the identified image components with clinical parameters including axillary surgery, lymph node histology and relapse within a follow-up period of 2 years from the study. Results indicate that AxLS is at least as accurate as clinical assessment and provides data predictive of relapse to complement axillary lymph node status although the technique cannot presently replace lymph node sampling for patient staging.

FOOTNOTES

^* This paper was presented in part at the 32nd Annual Meeting of the Society of Nuclear Medicine, Houston, TX, June 2–5, 1985.

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