We report a comparative study of 3 clear cell tumors of the lung (CCTL) and 3 angiomyolipomas (AML) of the kidney. Morphological analysis shows that the cells of CCTL are identical to the perivascular epithelioid component of AML. Phenotypically they both consistently expressed melanoma-associated antigens recognized by Moabs HMB45 and HMSA-1, while they were negative for HMSA-5. A minority of cells also expressed S-100 protein, vimentin and actin. In addition, one case of CCTL showed mature adipose tissue entrapped in the proliferation, thus suggesting an intermediate form between CCTL and AML. Based on morphological and phenotypical similarities, it is suggested that CCTL and AML belong to the same family of lesions, characterized by the presence of a peculiar muscle cell, expressing different melanoma-associated antigens.

Clear cell ("sugar") tumor of the lung is a lesion strictly related to angiomyolipoma the concept of a family of lesions characterized by the presence of the perivascular epithelioid cells (PEC)

BONETTI, Franco;G. Martignoni;ZAMBONI, Giuseppe;
1994-01-01

Abstract

We report a comparative study of 3 clear cell tumors of the lung (CCTL) and 3 angiomyolipomas (AML) of the kidney. Morphological analysis shows that the cells of CCTL are identical to the perivascular epithelioid component of AML. Phenotypically they both consistently expressed melanoma-associated antigens recognized by Moabs HMB45 and HMSA-1, while they were negative for HMSA-5. A minority of cells also expressed S-100 protein, vimentin and actin. In addition, one case of CCTL showed mature adipose tissue entrapped in the proliferation, thus suggesting an intermediate form between CCTL and AML. Based on morphological and phenotypical similarities, it is suggested that CCTL and AML belong to the same family of lesions, characterized by the presence of a peculiar muscle cell, expressing different melanoma-associated antigens.
1994
Adult Angiomyolipoma/chemistry/*pathology Blood Vessels/cytology Epithelioid Cells/*pathology Female Glycogen/analysis Human Immunohistochemistry Kidney Neoplasms/chemistry/*pathology Lung Neoplasms/chemistry/*pathology Male Middle Age
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11562/7896
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