Stromal (Fibroepithelial) Polyp
AKA Pseudosarcoma
Botryoides
Common sites:
- Lateral walls of
the lower third
Gross features:
- polypoid or pedunculated
- usually < 4cm
- soft or rubbery
- gray-white
- covered by intact squamous epithelium
Histologic features:
- stroma may be loose or dense
- abundant blood
vessels
- half show atypical stromal cells:
- large nuclei
- pleomorphic nuclei
- occasionally multiple
nuclei
- may have prominent
nucleoli
- abundant cytoplasm
- rarely mitoses
Immunophenotype:
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Marker:
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Sensitivity:
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Specificity:
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Myoglobin (neg)
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Molecular features:
Other features: