Staging of Regional Lymph Nodes in Melanoma Patients by Means of 99mTc-MIBI Scintigraphy
Omar Alonso, MD, PhD1,
Miguel Martínez, MD2,3,
Lucía Delgado, MD3,4,
Ana De León, MD1,
Daniela De Boni, MD2,5,
Graciela Lago, MD1,
Mariela Garcés, MD4,
Flávia Fontes, MD1,
José Espasandín, MD5 and
Julio Priario, MD4
1 Nuclear Medicine Center, Clinical Hospital, University of Uruguay, Montevideo, Uruguay
2 Dermatology Department, Clinical Hospital, University of Uruguay, Montevideo, Uruguay
3 Medicine Department, Clinical Hospital, University of Uruguay, Montevideo, Uruguay
4 Clinical Oncology Department, Clinical Hospital, University of Uruguay, Montevideo, Uruguay
5 National Institute of Oncology, Montevideo, Uruguay

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FIGURE 1. Anterior thoracic view of patient with T2b melanoma of trunk shows focal 99mTc-MIBI uptake in left axilla (arrow), corresponding to palpable lymphadenopathy that proved to be inflammatory by histology.
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FIGURE 2. Anterior image of thorax demonstrates focal area of increased 99mTc-MIBI accumulation in right axilla (arrowhead) in patient with stage II melanoma of trunk. Patient presented with nodal recurrence in same basin 18 mo after scintigraphy. Mask was placed over myocardium.
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FIGURE 3. Anterior pelvic view of patient with stage II melanoma of right leg shows focal tracer uptake in right groin (arrowhead). Nodal recurrence developed in same basin 12 mo after 99mTc-MIBI scanning. Mask was placed over bladder.
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Copyright © 2003 by the Society of Nuclear Medicine.