Related Experiment Video
Updated: Aug 25, 2026

Orthotopic Implantation of Patient-Derived Cancer Cells in Mice Recapitulates Advanced Colorectal Cancer
Published on: February 10, 2023
Testicular metastasis of primary cecal carcinoid tumor
Guang Qian Xiao1, Douglas R Birns, Richard R P Warner
1Departments of Pathology, Urology, and Medicine, Mount Sinai School of Medicine, New York, NY, USA.
Abstract:
Testicular carcinoids are rare and the majority are of primary testicular origin. Testicular carcinoids can also be secondary from extra-testicular primary tumors, but the incidence is even less common. The case described here is a patient who initially had an infiltrating cecal carcinoid with hepatic metastasis. Following surgery, he was managed with octreotide and had close monitoring of the levels of serum serotonin and its urinary metabolite. He experienced a fairly indolent clinical course and 5 years after excision of the primary cecal carcinoid, his hepatic lesion has virtually been unchanged. However, he developed a secondary testicular metastasis. He has otherwise remained well, without evidence of metastases elsewhere on imaging studies.

