PMC7567619_01
In A and B, chest CT scans acquired during the menstrual period, showing thickening of the nodule wall and the presence of another nodule with a similar appearance in the left lower lobe (arrows). The nodule in the left lower lobe was not evident in the image acquired between menses (in D). In C and D, chest CT scans acquired two weeks after menstruation, showing a small cavitary nodule located in the apical segment of the right lower lobe (arrow in C).
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Chest CT performed during the menstrual period showed two small cavitary nodules, containing ground-glass opacities, one in each of the lower lobes (Figures 1A and 1B). Another chest CT, acquired two weeks later (between menses), demonstrated that those abnormalities had resolved, except for a small thin-walled cavity in the right lower lobe (Figures 1C and 1D).