Sentinel nodes are occasionally found in the popliteal fossa . If that happens, the primary lesion is usually situated on the calf. Although the majority of melanomas on the calf drain to sentinel nodes in the groin, the popliteal fossa has to be imaged in patients with a melanoma below the knee.
This patient was treated early after the introduction of lymphatic mapping. No flow images were obtained at that time. As a consequence, it could not be determined whether the nodes in the groin were sentinel (first-tier) nodes or second-tier nodes. The drainage order of the popliteal nodes was also not clarified. The blue dye was not helpful in this case. All radioactive nodes were removed to err on the safe side.
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Complete Guide to Preventing Skin Cancer. We all know enough to fear the name, just as we do the words tumor and malignant. But apart from that, most of us know very little at all about cancer, especially skin cancer in itself. If I were to ask you to tell me about skin cancer right now, what would you say? Apart from the fact that its a cancer on the skin, that is.