PMC5612809_01
Cut surface of the right lower lobe of the lung containing yellow-brown nodule 3 cm in size. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
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Besides pulmonary cyanosis, in the right lower lobe, well-circumscribed yellow-brown nodule, which was 3 cm in size and appeared calcified when cutting the tissue, was found (Fig. 1).
H&E: 2.1 Well-demarcated lesion surrounded by bony spicules (H&E x 10 Magnification). 2.2 Tumor composed of mature adipose tissue and hematopoietic cells (myeloid cells, megakaryocytes, erythroid cells) (H&E x 40 Magnification).
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Routine hematoxylin & eosin staining of the nodule revealed a lesion composed of mature adipose tissue and hematopoietic cells (myeloid cells, megakaryocytes, erythroid cells) with fragments of mature bony tissue (Fig. 2) suggesting the diagnosis of pulmonary myelolipoma.