Other edifying cases - Case 9. (cytologic picture 6)
A parathyroid adenoma
Pap-smear, 1000x. The nuclei are round to oval. The enlarged, atypical cells on the right display pleomorphism. The latter is not a frequent finding in a parathyroid adenoma. Nevertheless, atypia and even pleomorphism of single cells has to be interpreted with great care in hormonally active organs.