Extensive extramedullary hematopoiesis in a thyroid nodule.
We describe a case of extramedullary hematopoiesis in a hyperplastic thyroid nodule from a patient with primary myelofibrosis. The presence of extensive extramedullary hematopoiesis in the thyroid gland was suspected as a result of fine-needle aspiration cytologic examination and was confirmed by histo- and immunomorphologic examination of the resected nodule. The diagnosis of myelofibrosis was established on the basis of clinical findings, hematologic laboratory results, and bone marrow morphologic characteristics.
Lazzi
S
S
Institute of Pathology Anatomy and Histology, University of Siena, Italy.
Als
C
C
Mazzucchelli
L
L
Kraft
R
R
Kappeler
A
A
Laissue
J
J
D000368:Aged; D001707:Biopsy, Needle; D005260:Female; D006411:Hematopoiesis, Extramedullary; D006801:Humans; D055728:Primary Myelofibrosis / Q000175:diagnosis; D013961:Thyroid Gland / Q000473:pathology*; D016606:Thyroid Nodule / Q000473:pathology*