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01.08.2015 | Case Study

Lipiodol injections for optimization of target volume delineation in a patient with a second tumor of the oropharynx

A case report

verfasst von: Dr. med. Marlen Haderlein, Ricarda Merten, Andrea Stojanovic, Stefan Speer, Claudia Scherl, Rainer Fietkau, Oliver J. Ott

Erschienen in: Strahlentherapie und Onkologie | Ausgabe 8/2015

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Abstract

Background

Lipiodol injections were administered in the head and neck area to improve gross tumor volume (GTV) definition for small-volume re-irradiation of a 63-year-old previously irradiated patient with a second tumor of the oropharynx in the posterior wall with longitudinal ligament infiltration (cT4cN0cM0).

Methods

The patient had dialysis-depending renal failure. On diagnostic computed tomography (CT), which was performed with intravenous contrast agent, the tumor in the oropharynx was not detectable. Because of dialysis-depending renal failure comorbidity, no contrast agent was applied in the planning CT and in the diagnostic magnetic resonance imaging (MRI) study. In each cross-sectional imaging study performed, the GTV, especially in craniocaudal extensions, was not safely delineable. Therefore, craniocaudal tumor margins were pharyngoscopically marked with Lipiodol injections, an iodine-containing contrast agent.

Results

In a second planning CT, the GTV could be defined with the help of the Lipiodol marks and small-volume re-irradiation was performed. No Lipiodol-associated side effects occurred in the patient.

Conclusion

In the present case, the use of Lipiodol injections at the tumor margins facilitated the definition of the GTV.

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Titel: Lipiodol injections for optimization of target volume delineation in a patient with a second tumor of the oropharynx
A case report
verfasst von: Dr. med. Marlen Haderlein
Ricarda Merten
Andrea Stojanovic
Stefan Speer
Claudia Scherl
Rainer Fietkau
Oliver J. Ott
Publikationsdatum: 01.08.2015
Verlag: Springer Berlin Heidelberg
Erschienen in: Strahlentherapie und Onkologie / Ausgabe 8/2015
Print ISSN: 0179-7158
Elektronische ISSN: 1439-099X
DOI: https://doi.org/10.1007/s00066-015-0856-9

Springer Medizin

Lipiodol injections for optimization of target volume delineation in a patient with a second tumor of the oropharynx

A case report