| Balloon cells are
altered melanocytes with clear vacuolated cytoplasm caused by a defect
in the process of melanogenesis.
The balloon cell naevus is characterized by large , vacuolated naevus cells with
clear cytoplasm and central nucleus. The nucleus appears hyperchromatic. Multinucleate balloon cells may be present.
The diagnosis should be made when more than 50% of the tumour shows
balloon cell change.
Although rare, balloon cell change
has been observed in a variety of melanocytic proliferations,
particularly intradermal melanocytic naevi and melanoma. Balloon cell
change has also been reported in dysplastic naevus.
Distinction between balloon cell
naevus and melanoma: In melanoma cells are larger ; mitotic
figures are present ; there is evidence of radial growth phase.
Visit: Balloon Cell Melanoma.
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Image
Link(Dr
Weem)
Balloon cell change may
lead to difficulties in diagnosis, particularly with other clear cell neoplasms.
Visit: Clear cell carcinoma of skin.
Balloon cell naevus
:Image Link(Dr
Weem) |