Tumor-to-tumor metastasis of clear cell renal cell carcinoma to contralateral synchronous pheochromocytoma: A case report

Table 1 Literature review related to the characteristics of tumor-to-tumor metastasis

Case number	Year	Donar neoplasm	Recepient neoplasm	Ref.
1	2003	RCC	Oncocytic carcinoma of the thyroid	Ales Ryska et al[6]
2	2009	RCC	Meningioma	Gutiérrez Morales JC et al[7]
3	2011	RCC	pNEN	Michael Cenkowski et al[8]
4	2014	RCC	Breast cancer	Tai-Di Chen et al[9]
5	2020	RCC	Meningioma	Johannes Dietterle et al[10]
6	2022	RCC	pNEN	Shunryo Minezaki et al[11]
7	2022	RCC	Meningioma	Pirlog R et al[12]

Renal cell carcinoma was selected as the donor neoplasm. RCC: Renal cell carcinoma.