Hello and welcome to HCM
First of all I would like to know the type of tumor
that developed in the testes.
A group of tumors called germ cell
tumors are known to develop components like cartilage
, bone, etc in the tumor.
A metastasis from such a tumor csn develop similar components in the distant lympn nodes.
Else there is no reason for cartlage to develop in a lymph node.
The removal of adjacent cartilage can possibily lead to inclusion of cartilage in the lymph node biopsy
In case you have more queries, feel free to post.
Thanks and take care
Dr Shailja P Wahal