Neoplasm to Neoplasm Metastasis

Olsen, Jørgen; Nielsen, Ole Skat; Engel, Uwe

doi:10.3109/00365598409180193

Cited by 21 publications

(2 citation statements)

References 8 publications

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“…Two cases of renal oncocytoma harboring metastatic small cell lung carcinoma were reported in the past [31,32]. Another metastasis of the squamous cell carcinoma of the lung to RO was described in 1999 [33].…”

Section: Discussionmentioning

confidence: 99%

Small Cell Variant of Renal Oncocytoma—A Rare and Misleading Type of Benign Renal Tumor

Hes¹,

Michal²,

Boudová³

et al. 2001

Int J Surg Pathol

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Here we report 3 cases of renal oncocytoma with a dominating small cell component arising in adult women. These 3 cases of small cell variant of renal oncocytoma were found among 134 cases of oncocytomas of the kidney in the routine and consultation files of the authors. Two of 3 cases were initially thought to be a malignant tumor by the referring pathologists. In all 3 cases minor areas of the tumors, which were identical to the classical renal oncocytomas were found. The small cell areas were arranged in a characteristic organoid pattern different from all the known types of the renal benign and malignant tumors. We summarize all morphologic, immunohistochemical, and ultrastructural features of this unusual oncocytoma variant with regard to its differential diagnosis. Int J Surg Pathol 9(3):215-222, 2001

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Section: Discussionmentioning

confidence: 99%

Small Cell Variant of Renal Oncocytoma—A Rare and Misleading Type of Benign Renal Tumor

Hes¹,

Michal²,

Boudová³

et al. 2001

Int J Surg Pathol

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“…Renal cell carcinoma is the most common recipient, with over 60 cases being reported [1]. However, there has only been 3 previously described cases of metastatic disease to renal oncocytoma (Table 1) [3, 16, 17]. This case represents the first reported case of prostatic adenocarcinoma to renal oncocytoma.…”

Section: Discussionmentioning

confidence: 99%

Clinically Undiagnosed Prostate Carcinoma Metastatic to Renal Oncocytoma

Horn

Fritz

LaGrange

et al. 2012

Case Reports in Urology

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Tumors-to-tumor metastasis is an uncommon occurrence and can be a source of great diagnostic difficulty, especially when the donor tumor is undiagnosed. Here we report a case of a kidney resected for a primary neoplasm (oncocytoma) that harbored metastases from a clinically undiagnosed prostatic adenocarcinoma. The presence of the poorly differentiated metastasis within an otherwise typical oncocytoma in the absence of metastases in the surrounding nonneoplastic renal parenchyma resulted in a diagnostic dilemma. To our knowledge, this is the first report of a case in the English literature of a clinically undiagnosed prostatic adenocarcinoma metastatic to a renal oncocytoma identified on examination of the resected renal neoplasm.

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Lung carcinoma with metastasis to testicular seminoma

Şahin

Ayala

et al. 1990

Cancer

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Tumor-to-tumor metastases are uncommon. The most frequent donor tumors are the lung, whereas renal cell carcinoma is by far the most common recipient. In this report the authors describe a lung tumor that metastasized to a testicular seminoma. This is the first reported case of tumor-to-tumor metastases in which seminoma of the testis is the recipient. The authors performed mucin and immunohistochemical studies on this case and on ten cases of nonseminomatous germ cell tumors containing embryonal carcinoma and endodermal sinus tumor for comparison. Mucin positivity as well as immunoreactivity for epithelial membrane and carcinoembryonic antigens were confined to metastatic adenocarcinoma in this case, whereas Ki-1 and alpha-fetoprotein immunostaining were restricted to the ten control cases of germ cell tumors. Although the majority of second malignant components found in a seminoma are other nonseminomatous germ cell components, the rare possibility exists that a second malignant component is a metastasis from elsewhere in the body.

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Neoplasm to Neoplasm Metastasis

Abstract: An unusual case of metastasis of neoplasm to a benign neoplasm is reported. The initial malignancy, a small-cell bronchogenic carcinoma, was found to have metastasis to a renal oncocytoma. A review of the literature indicates, according to our knowledge, no similar case.

Cited by 21 publications

References 8 publications

Small Cell Variant of Renal Oncocytoma—A Rare and Misleading Type of Benign Renal Tumor

Small Cell Variant of Renal Oncocytoma—A Rare and Misleading Type of Benign Renal Tumor

Clinically Undiagnosed Prostate Carcinoma Metastatic to Renal Oncocytoma

Lung carcinoma with metastasis to testicular seminoma

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