tumor-to-tumor metastasis

tumor-to-tumor metastasis

A rare event in which one CA metastasizes into another in a Pt with 2 or more CAs
References in periodicals archive ?
We report a case of a tumor-to-tumor metastasis with endometrial carcinoma as the donor and a squamous cell carcinoma of the vulva as the recipient.
This confirmed the coexistence of 2 distinct tumors and the presence of a tumor-to-tumor metastasis.
Tumor-to-tumor metastasis is a rare phenomenon first described by Berent in 1902.
Several mechanisms have been proposed to account for the phenomenon of tumor-to-tumor metastasis.
Two cases of uterine cervical carcinomas have been documented to be involved in a tumor-to-tumor metastasis, and, in both cases, the cervical tumors were donor tumors.
In this case, a tumor-to-tumor metastasis must be differentiated from an endometrioid adenocarcinoma with squamous differentiation.
By the criteria, the present case is indeed a true tumor-to-tumor metastasis.
When 2 separate tumors are present in the same patient, a possibility of tumor-to-tumor metastasis should be considered.
Renal cell cancer: best recipient of tumor-to-tumor metastasis.
Tumor-to-tumor metastasis to the central nervous system.
Tumor-to-tumor metastasis with squamous carcinoma on the left and metastatic endometrioid adenocarcinoma on the right (hematoxylineosin, original magnification X20).
Tumor-to-tumor metastasis of RCC to HAB is rare and its diagnosis is challenging, especially if one is not aware of the distinct histologic appearance of the 2 components and the immunohistochemical stains that can differentiate between them.