ground glass nodule
A ground-glass density nodule (GGN) is a circumscribed area of increased pulmonary attenuation with preservation of the bronchial and vascular margins. A GGN can be:
- partly solid (part of the ground-glass opacity completely obscures the parenchyma)
- non-solid (no completely obscured areas) - pure ground-glass nodules
Although encountered regularly, the incidence of cancer in these nodules has been reported as high as 63% (for partly solid nodules, in one study). Histologically these may represent:
- malignancy
- primary (e.g., bronchoalveolar carcinoma (BAC), adenocarcinoma in situ, minimally invasive adenocarcinoma and invasive adenocarcinoma)
- metastases: occasionally can manifest as ground glass density nodules
- atypical adenomatous hyperplasia
- focal interstitial fibrosis
- aspergillosis
- focal pulmonary hemorrhages
See also
Siehe auch:
- Lungenrundherd
- Milchglasverschattungen
- Lungenblutung
- In Situ Adenokarzinom der Lunge
- aspergillosis
- diffuse ground glass nodules
- adenocarcinoma in situ
- invasive adenocarcinoma
- atypische adenomatöse Hyperplasie
und weiter:
Assoziationen und Differentialdiagnosen zu Milchglasherd:
