A case of multiple leiomyomatous lesions of the lung: An analysis of flowcytometry and hormone receptors |
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Authors: | Tatsuo Uchida Takahiko Tokumaru Hiroshi Kojima Katsura Nakagawaji Munehisa Imaizumi Toshio Abe |
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Affiliation: | (1) The Department of Surgery, Aichi Hospital, 18 Kuriyado, Kakemachi, Okazaki-Shi, 444 Aichi, Japan;(2) The Department of Thoracic Surgery, Nagoya University School of Medicine, Nagoya, Japan |
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Abstract: | A 36 year old woman was admitted to our department because of a chest X-ray which showed multiple developing shadows. She underwent bilateral exploratory thoracotomies and a total 5 tumors were resected and pathologically diagnosed as benign metastasizing leiomyoma, the largest of which was positive for the progesterone receptor and negative for the estrogen receptor. A histogram of this tumor using a flow cytometer showed a diploid pattern and 4.6 percent of the S phase which was not more than that of a leiomyoma of the uterus from another patient. Two months later, she underwent a hysterectomy and bilateral salpingo-oophorectomy for treatment of the positive progesterone receptor in the pulmonary lesions. The resected uterine myoma and normal myometrium showed positive estrogen and progesterone receptors. For the subsequent 28 months she has been free of any further symptoms. Benign metastasizing leiomyoma of the uterus is a rare disease and very interesting because of its histological benignity and hormonal dependency. However, according to the literature, it is often confused in entity due to the fact that normal lung tissue also possesses hormone receptors. Considering our data on hormone receptors, it is rational to think that multiple leiomyomatous lesions in the lung should only be diagnosed as benign metastasizing leiomyomas when they possess positive estrogen and progesterone receptors. |
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Keywords: | lung leiomyoma metastasis hormone receptor flow cytometry |
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