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Pulmonary interstitial glycogenosis in Birt-Hogg-Dubé syndrome-associated lung cysts: A new insight into the pathogenesis?

Kawachi, Riken ; Nakatani, Yukio ; Furuya, Mitsuko ; Nakamura, Naoya ; Kondo, Yusuke ; Nagashima, Yoji ; Nakayama, Tomohiro ; Okada, Masahiro ; Sakurai, Hiroyuki ; Masuda, Shinobu

Pathology international, 2023, Vol.73 (12), p.601-608

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  • Título:
    Pulmonary interstitial glycogenosis in Birt-Hogg-Dubé syndrome-associated lung cysts: A new insight into the pathogenesis?
  • Autor: Kawachi, Riken ; Nakatani, Yukio ; Furuya, Mitsuko ; Nakamura, Naoya ; Kondo, Yusuke ; Nagashima, Yoji ; Nakayama, Tomohiro ; Okada, Masahiro ; Sakurai, Hiroyuki ; Masuda, Shinobu
  • É parte de: Pathology international, 2023, Vol.73 (12), p.601-608
  • Notas: ObjectType-Case Study-2
    content type line 59
    SourceType-Reports-1
    ObjectType-Report-1
  • Descrição: Multiple lung cysts are one of the major features of Birt-Hogg-Dubé syndrome (BHD), but little is known about their nature and pathogenesis. We report a case of a woman diagnosed with BHD lung cysts who exhibited pulmonary interstitial glycogenosis (PIG), a mesenchymal abnormality hitherto undescribed in this disease, in specimens resected at 14 and 29 years of age. Histopathologically, oval to spindle clear cells were seen in the subepithelial interstitial tissue of septal structures and the walls of the cysts. They had abundant periodic acid-Schiff-positive cytoplasmic glycogen. Immunohistochemically, these cells were positive for a few markers of mesenchymal stem cell-like lineage, including vimentin, CD44, and CD10, and negative for markers of epithelial or specific mesenchymal differentiation; these results were consistent with the reported immunophenotype of PIG cells. These PIG cells were more abundant in her specimen at age 14 years than in the second specimen from adulthood. The present case suggests that BHD lung cysts belong to a group of pulmonary developmental disorders characterized by combined PIG and alveolar simplification/cystic change. Disorders with PIG may persist until adulthood and may be of clinical and pathological significance.
  • Idioma: Inglês

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