Which of the following is not a feature of adrenal adenoma fine needle aspirations?
Mitotic figures
Nuclear molding
Nuclear enlargement
Naked nuclei
Indistinct cell borders
Show Answer and Explanations
Mitotic figures — Correct answer
Correct. Mitotic figures are usually absent in adrenal adenomas.
Nuclear molding
Incorrect. Nuclear molding may be present in adrenal adenomas.
Nuclear enlargement
Incorrect. Focal nuclear enlargement may be present in adrenal adenomas.
Naked nuclei
Incorrect. In adrenal adenomas, naked nuclei stripped of their delicate cytoplasm are frequently present.
Indistinct cell borders
Incorrect. When adrenal adenoma cells are intact, the cell borders are indistinct.
Summary
Summary: Fine needle aspirations of adrenal adenomas typically show round naked nuclei in a frothy background. When intact cells are present, they have abundant cytoplasm and indistinct cell borders. Focal nuclear enlargement and nuclear molding may be present but mitotic figures are absent.