Sir, I would like to draw your readers' attention to a possible artefact source. A 58-year-old female patient was referred to the Istanbul University, Faculty of Dentistry, Dentomaxillofacial Radiology Department for a panoramic radiograph. This revealed radio-opaque lines ranging vertically over the whole image and horizontally located in front of the vertebrae bilaterally. Following examination it was apparent that the patient was wearing a synthetic wig, which she was wearing because of hair loss due to chemotherapy for breast cancer. This has been reported previously by Scheifele et al.1 but we believe that this remains an usual circumstance which may cause at least initial confusion.

Figure 1
figure 1

Panoramic radiography of the patient

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