PMC5498207_01
Chest computed tomography at the patient's first admission. Chest computed tomography at the patient's first admission revealed ground-glass opacity in the right anterior basal segment.
1349-7235-56-1405-g001.jpg
PMC5498207_01_1349-7235-56-1405-g001.jpg
g001
At that time, chest computed tomography (CT) revealed ground-glass opacity (GGO) in the right anterior basal segment (Fig. 1), and a bronchoscopic examination revealed a red, elevated lesion at the inlet portion of the anterior basal bronchus of the right lung (Fig. 2).
The clinical course of the patient. The clinical course of the patient revealed catamenial hemoptysis every other month after the discontinuation of oral contraceptives.
1349-7235-56-1405-g003.jpg
PMC5498207_01_1349-7235-56-1405-g003.jpg
g003
This medication was continued until 1 month prior to the appearance of the hemoptysis (Fig. 3).
The histopathological examination for the resected specimen. An Hematoxylin and Eosin staining resected specimen from the operation indicated the presence of endometrial tissue adjacent to a pulmonary artery in the lungs (A-C). Bleeding and hemosiderosis were observed in the alveoli around the endometrial tissue. The results of an immunohistochemical analysis revealed endometrial stroma and glands that were positive for estrogen receptor (D), endometrial glands that were positive for PAX8 (E), and endometrial stroma that was positive for CD10 (F). (A: loupe; B: x40; C-F: x200)
1349-7235-56-1405-g004.jpg
PMC5498207_01_1349-7235-56-1405-g004.jpg
g004
A histopathological examination of the resected specimen revealed the existence of endometrial glands that were immunohistochemically-positive for estrogen receptor and PAX8 and endometrial stroma that was positive for estrogen receptor and CD10 (Fig. 4).