PMC8799065_01
Computed tomography of a solid pulmonary nodule of the right upper lobe in the patient with benign metastasizing leiomyoma (white arrow).
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And two radiologists considered it to be benign or low-grade malignant (Figure 1).
Hematoxylin-eosin staining showed (A: 100x, B: 400x) the uterine tumor cells were spindle like and arranged in a whirlpool shape, (C: 100x, D: 400x) fusiform smooth muscle cells aggregated and arranged in a palisade form in the pulmonary tumor, and no atypia or malignant cells existed.
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The postoperative pathology indicated uterine leiomyoma (Figure 2A,B). Postoperative pathological findings suggested a leiomyoma (Figure 2C,D).