Quintáns, A. T., Martín Valadés, J. I., del Río, C. G., Rojo, I. L., & Casado, O. A. (2022). Squamous cell carcinoma in a retrorectal cystic hamartoma. Journal of Radiology and Oncology, 6(1), 001–003. https://doi.org/10.29328/journal.jro.1001039