Linfogammagrafía de miembros inferiores: tres posibles patrones

From the perspective of nuclear medicine physicians, we present three cases of lower-limb oedema. After providing a brief description of the technique used and the mechanism of action of radioisotope (Tc-99m-labelled human albumin nanocolloid), we describe the uptake pattern of lower-limb lymphoscintigraphy in three representative cases of what is considered normal, primary lymphedema and secondary lymphedema.