Larynx, hypopharynx & trachea
Squamous cell carcinoma
Papillary squamous cell carcinoma


Topic Completed: 1 November 2013

Minor changes: 3 March 2021

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PubMed Search: Papillary squamous cell carcinoma [title]

Nat Pernick, M.D.
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Cite this page: Pernick N. Papillary squamous cell carcinoma. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/larynxpapillaryscc.html. Accessed April 19th, 2021.
Definition / general
  • Uncommon; exophytic growth pattern, features of carcinoma in situ plus foci of invasion
  • Mean age in 60s
  • Usually in larynx, oral cavity, oropharynx, hypopharynx and sinonasal tract
  • Associated with HPV
  • Relatively good prognosis; usually T2
  • Difficult to determine invasion in biopsy specimens, although should consider invasive if clinically appreciable exophytic mass plus marked atypia, even without definitive stromal invasion
Treatment
  • Surgery
Gross description
  • Often solitary with exophytic or papillary growth; 2 mm to 4 cm
Microscopic (histologic) description
  • Finger-like projections with fibrovascular cores or broad based bulbous growth with rounded projections and limited fibrovascular cores
  • Overlying squamous epithelium is malignant; usually no / limited surface keratinization
Differential diagnosis
  • Laryngeal papillomatosis: bland epithelial proliferation with no / minimal atypia
  • Verrucous carcinoma: minimal atypia
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