PMC7218215_01
White dome-shaped papules (A-B). Dermatoscopically the lesions show a structure-less pale white coloration, roundish contour and well-demarcated borders. Clues of chronically sun-exposed skin such as solar lentigos (brown spots) can also be detected at the peri-lesional skin (C-D). (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)
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There were also multiple whitish papules in the face, nose and retroauricular area (Fig. 1).
Multiple bilateral cysts are noted with normal intervening parenchyma. Some of the cysts are paramediastinal and in relation to the fissures with an elliptical shape (A-B). An elliptical bilobated cyst is noted in the right middle lobe (C). The cysts are predominantly located in the lower lobes (D).
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Some cysts appeared to be septated, elliptical and the majority of them were located in the subpleural and paramediastinal region (Fig. 2).
Proliferation of follicular epithelium surrounded by a perifollicular fibrous sheath.
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BHDS. Biopsy of the skin lesions revealed follicular epithelium proliferation surrounded by perifollicular fibrous sheaths, diagnostic of fibrofolliculomas (Fig. 3).
PMC7218215_02
A few numbers of white, dome-shaped papules on the frontal and lateral face are noted (white arrows) (A-B). Dermatoscopic examination reveals lesions with pale white areas and a hint of circular structures correlating with follicular openings (black arrows). Dermatoscopy was very helpful both in terms of diagnosis and as a guide for the selection of the precise site of skin biopsy (C-D).
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There were limited white dome shaped papules on the forehead and the temporal region of the face (Fig. 4).
Multiple bilateral cysts are noted with normal intervening parenchyma. A bilobated cyst is noted (A). A cyst in the right middle lobe is in relation to the major fissure (B).
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Thorax MDCT revealed multiple thin wall cysts, some of which were bilobated and in relation to the fissures (Fig. 5).