pathology of cancer of paranasal sinuses
TRANSCRIPT
Pathology of cancer
of Paranasal sinuses
M N El-Bolkainy
NCI, Cairo University
2009
Classification
• PRIMARY TUMORS
1.Epithelial
2.Neuroectodermal
3.Mesenchymal
• SECONDARY TUMORS
1.Local spread
2.Metastatic
Epithelial tumors
1. Schneiderian origin
2. Minor salivary origin
3. Odontogenic origin
Inverted papilloma
Transitional carcinoma
Squamous carcinoma
Verrucous carcinoma
Papilary squamous carcinoma
Basaloid carcinoma
Undifferentiated carcinoma
Adenocarcinoma
Adenuid cystic carcinoma
Ameloblastoma
Neuroectodermal tumors
1. Olfactory neuroblasoma (Central PNET)
2. Malignant melanoma
3. Ectopic meningioma
Olfactory neuroblasoma
Melanoma
Ectopic meningioma
Mesenchymal tumors
1. Soft tissue • Low Malignant Potential (LMP)
• Malignant
2. Bone sarcomas
3. Lymphomas
Myxoma
Giant cell lesion
Angiofibroma
Rhabdomyosarcoma (RMS)
RMS
RMS
Chondrosarcoma Osteosarcoma
Chordoma
Burkitt
NHL
T/NK cell lymphoma
Secondary tumors
1. Local invasion from: Nasal cavity, nasopharynx and orbit
2. Metastatic from: kidney is the most common primary
Clear cell carcinoma