Wu N, Pang L, Chen Z, Wang Y, Ma Q, Chen G, Chen J, Huang J. Primary Esophageal CD30-Positive ALK-Positive Anaplastic Large Cell Lymphoma: A Case Report and Literature Review. Journal of Gastrointestinal Cancer. 2010 Jun 04;42(1):57–60. doi: 10.1007/s12029-010-9147-y.