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. 2015 Jan 9;16(1):188–195. doi: 10.3348/kjr.2015.16.1.188

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Copyright © 2015 The Korean Society of Radiology

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 1 — 60-year-old female patient with clinically swelling of lower right leg suspicious for primary lymphedema. Lymphatic transport disorders (diffuse distribution of radiopharmaceutical at right lower leg, delayed/missing inguinal lymph nodes of right leg, transport-index 39) were properly detected in planar lymphoscintigraphy (4.5 hours after injection), but only tomographic acquisition by means of single photon emission computed tomography/CT (SPECT/CT) confirmed "dermal backflow" at posterior right lower leg (red colored); additional value of SPECT/CT in terms of dermal backflow consists of three-dimensional spatial resolution and definable location of anatomical margins. Physiological lymph transport and distinct visualization of inguinal and iliacal lymph nodes of left leg.