Microscopic study of edema in hydatidiform mole

Revista Brasileira de Saúde Materno Infantil

Olivar C. Castejón¹  Aury Caraballo¹  Oliver Castejón¹  Elizabeth Cedeño¹ 

关键词: Hydatidiform mole;    Edema;    Microscopy;    Scanning electron microscopy;    Mola hidatiforme;    Edema;    Microscopia;    Microscopia eletrônica de varredura;   

DOI  :  10.1590/S1519-38292014000300007

来源: SciELO

【 摘 要 】

Objectives: the purpose of this study is to use light microscopy and scanning electron microscopy to determine the effect of edema on the structure of the molar vesicle. Methods: samples were taken from the complete hydatidiform mole and processed using conventional light and scanning electron microscopy techniques and an observation protocol that identified four variables: factors underlying the development of edema; the condition of the trophoblast basement membrane, development of the villi, accumulation and degeneration of sulphated mucosubstances at stromal level. Results: light microscopy showed a permeable trophoblastic basement membrane, a swollen syncytium, edematous regions disorganizating the stromal region and causing ischemic necrosis of cells. Using scanning electron microscopy, the basement membrane was found to be distended and thickened, with large irregular holes for the entry and movement of liquid, leaving a wide range of fluids during the influx process and depriving stromal cells of nutrition. Conclusions: a new three-dimensional view of the changes brought about by the entry of fluids into the stroma of molar hydropic vesicles was provided by scanning electron microscopy and confirmed by light microscopy, thereby explaining the changes occurring at the level of the stroma as an effect of the edema.

【 授权许可】

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