Sinonasal Tract/Nasopharynx 8.1 ADENOID CYSTIC CARCINOMA VS. HPV-RELATED CARCINOMA WITH ADENOID CYSTIC-LIKE FEATURES Adenoid Cystic Carcinoma HPV-Related Carcinoma with Adenoid Cystic-Like Features Age Typically adults, peak incidence in sixth decade…
Vulva and Vagina 1.1 VESTIBULAR PAPILLOMATOSIS (HYMENAL TAG) VS. CONDYLOMA ACUMINATUM Vestibular Papillomatosis (Hymenal Tag) Condyloma Acuminatum Age Young women of reproductive age, upon onset of sexual activity Adults and…
Thyroid and Parathyroid Glands 9.1 ANAPLASTIC (UNDIFFERENTIATED) THYROID CARCINOMA VS. LARYNGEAL SQUAMOUS CELL CARCINOMA INVOLVING THYROID GLAND Anaplastic (Undifferentiated) Thyroid Carcinoma Laryngeal Squamous Cell Carcinoma Involving Thyroid Gland Age Typically…
Oral Cavity 5.1 ACANTHOLYTIC VARIANT OF SQUAMOUS CELL CARCINOMA VS. ANGIOSARCOMA Acantholytic Variant of Squamous Cell Carcinoma Angiosarcoma Age Typically elderly adults Typically elderly adults Location Most common in the…
Salivary Glands 1.1 ACINIC CELL CARCINOMA VS. MAMMARY ANALOGUE SECRETORY CARCINOMA (MASC) Acinic Cell Carcinoma Mammary Analogue Secretory Carcinoma (MASC) Age Wide range, with slight peak in seventh decade. Slight…
Neck/Soft Tissue 4.1 BRANCHIAL CLEFT CYST VS. METASTATIC HPV-RELATED SQUAMOUS CELL CARCINOMA Branchial Cleft Cyst Metastatic HPV-Related Squamous Cell Carcinoma Age Most commonly young adults. Rare in adults older than…
Oropharynx 6.1 HPV-RELATED SQUAMOUS CELL CARCINOMA VS. CONVENTIONAL SQUAMOUS CELL CARCINOMA HPV-Related Squamous Cell Carcinoma Conventional Squamous Cell Carcinoma Age Adults with peak in fifth and sixth decades Adults with…
Odontogenic/Bone 2.1 AMELOBLASTOMA VS. AMELOBLASTIC CARCINOMA Ameloblastoma Ameloblastic Carcinoma Age Wide age range, peak in fourth to fifth decades Most cases arise in adults, with peak in fifth to sixth…
