"...and they are most commonly found/located in the lymph nodes followed by the liver."

"ganglionar" is the Spanish adjective form (ganglionic in English), so if you want to preserve that you could rewrite as:

"The frequency of metastasis is associated with the size [of the tumour], while ganglionic metastases occur/are observed/present/manifest most commonly followed by hepatic metastases."

or "....., while ganglionic followed by hepatic are the locations where metastases most commonly occur/present/manifest."


Melanoma ganglionic metastasis 30 years after ... - SciELO
www.scielo.br/scielo.php?script=sci_arttext&pid=S1516...
by AJ Tincani - ‎1996 - ‎Related articles
CASE REPORT. Melanoma ganglionic metastasis 30 years after treatment of the primary tumor – a case report. Alfio José Tincani; Antonio Santos Martins; ...

[Ganglionic metastasis in the laryngeal cancer]. - NCBI
www.ncbi.nlm.nih.gov/pubmed/5598162
by G Capellá - ‎1967
Acta Otorinolaryngol Iber Am. 1967;18(1):23-34. [Ganglionic metastasis in the laryngeal cancer]. [Article in Spanish]. Capellá G, Izquierdo A. PMID: 5598162 ...

Pulmonary adenocarcinoma metastasis to a dorsal root ...
jmedicalcasereports.biomedcentral.com/articles/10.../1752-1947-7-212
by PJ Slotty - ‎2013 - ‎Cited by 1 - ‎Related articles
Dorsal root ganglion metastases seem to be extremely rare and can mimic primary local nerve sheath tumors. Therefore, they usually present as incidental ...