| CASE REPORT |
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| Year : 2022 | Volume
: 14
| Issue : 4 | Page : 138-140 |
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Transient rectangular alopecia after endovascular embolization: A case series of four patients describing dermoscopic and histopathologic findings
María Herrero-Moyano1, Patricia Muñoz Hernández2, Paula García Castañon3, Jose Luis Caniego Monreal4
1 Department of Dermatology, University Hospital of La Princesa, Madrid, Spain
2 Department of Anatomic Pathology, University Hospital of La Princesa, Madrid, Spain
3 Department of Medical Physics and Radiation Protection, University Hospital of La Princesa, Madrid, Spain
4 Department of Head of Interventional Neuroradiology, University Hospital of La Princesa, Madrid, Spain
Correspondence Address:
María Herrero-Moyano
Department of Dermatology, University Hospital of La Princesa, Calle Diego de Lóon 62, Madrid
Spain
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/ijt.ijt_172_20
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Transient rectangular alopecia after endovascular embolization (TRAEE) is considered a specific form of radiodermatitis that is probably underreported in the literature. We present a case series of four patients from our hospital describing dermoscopic and histopathologic findings. Dermoscopic findings overlap with those of alopecia areata; therefore, TRAAE may be misdiagnosed without a precise history. Histopathology analysis of one of our cases showed different characteristics from the only report in the literature (high proportion of follicles in telogen phase). Initial reports considered that total radiation doses between 3 and 5 Gy produced TRAEE, whereas doses higher than 7Gy could trigger permanent alopecia. However, one of our patients exposed to a total dose of 7.6 Gy had complete hair regrowth.
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