Acknowledgements
The authors thank Associate Professor Steven Kossard for providing pathological material for further evaluation, and staff of the Department of Anatomical Pathology at Royal Prince Alfred Hospital for technical assistance. Financial support of the Cancer Institute, New South Wales and the National Health and Medical Research Council is also gratefully acknowledged.
Comment:The case presented in this report was reviewed by Dr Artur Zembowicz, who first described PEM in 2004. He agreed with the diagnosis of PEM for this case.