Key result
Helical TomoTherapy achieves precise coverage and acceptable organ sparing for total scalp irradiation in multifocal angiosarcoma.
Why the study?
The complex shape of the scalp poses a dosimetric challenge for achieving homogeneous dose distribution and organ-at-risk sparing in radiotherapy for angiosarcoma.
Case Report (n=1)
Helical TomoTherapy is a feasible technique for total scalp irradiation in patients with extensive angiosarcoma, allowing precise target coverage while sparing organs at risk.
Hypothesis-generating for helical tomotherapy in multifocal scalp angiosarcoma; prospective validation required before clinical adoption.
Angiosarcoma of the scalp is a rare aggressive tumor that affects elderly patients. Chemoradiation is the treatment of choice for multicentric and extensive disease. The shape of the scalp represents a dosimetric challenge in terms of achieving a homogeneous concave dose distribution with coverage of the entire target volume and an acceptable organs-at-risk sparing. We report a case of an 81-year-old man with a multifocal angiosarcoma of the scalp treated with Helical TomoTherapy ® (Accuray Inc., Sunnyvale, CA, USA) intensity modulated radiotherapy. This technique allows precise and daily verifiable coverage of the target keeping the dose to the organs at risk within the constraints.
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Cuccia et al. (2016) conducted a case report in Multifocal angiosarcoma of the scalp (n=1). Helical TomoTherapy® intensity modulated radiotherapy was evaluated. Helical TomoTherapy® intensity modulated radiotherapy provided precise target coverage and acceptable organ-at-risk sparing for total scalp irradiation in a patient with multifocal angiosarcoma.
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