Squamous Cell Carcinoma In Situ with Questionable Stromal Invasion

**Semantic type:** Neoplastic Process

**Definition:** A malignant epithelial neoplasm involving all the layers of the squamous epithelium, but it is not certain if it is confined to the squamous epithelium or it has invaded the basement membrane and the underlying stroma.

**Synonyms:** - Squamous cell carcinoma in situ with questionable stromal invasion