CAVITY AND PARANASAL SINUSES (ICD‐O C30.0, 31.0, 1)



NASAL CAVITY AND PARANASAL SINUSES (ICD‐O C30.0, 31.0, 1)


Rules for Classification


The classification applies only to carcinomas. There should be histological confirmation of the disease.


Anatomical Sites and Subsites



  1. 1. Nasal Cavity (C30.0) (Fig. 97)

    • Septum
    • Floor
    • Lateral wall
    • Vestibule

  2. 2. Maxillary Sinus (C31.0) (Fig. 98)
  3. 3. Ethmoid Sinus (C31.0) (Fig. 98)

    • Left
    • Right

Regional Lymph Nodes


See Head and Neck Tumours.


TN Clinical Classification


T – Primary Tumour












TX Primary tumour cannot be assessed
T0 No evidence of primary tumour
Tis Carcinoma in situ
Schematic illustration of Nasal Cavity.

Fig. 97

Schematic illustration of Maxillary Sinus and Ethmoid Sinus.

Fig. 98


Maxillary Sinus


















T1 Tumour limited to the mucosa with no erosion or destruction of bone (Fig. 99)
T2 Tumour causing bone erosion or destruction, including extension into the hard palate and/or middle nasal meatus, except extension to posterior wall of maxillary sinus and pterygoid plates (Fig. 100)
T3 Tumour invades any of the following: bone of posterior wall of maxillary sinus, subcutaneous tissues, floor or medial wall of orbit, pterygoid fossa, ethmoid sinuses (Figs. 101, 102)
T4a Tumour invades any of the following: anterior orbital contents, skin of cheek, pterygoid plates, infratemporal fossa, cribriform plate, sphenoid or frontal sinuses (Figs. 103, 104)
T4b Tumour invades any of the following: orbital apex, dura, brain, middle cranial fossa, cranial nerves other than maxillary division of trigeminal nerve (V2), nasopharynx or clivus (Fig. 105)
Schematic illustration of tumour limited to the mucosa with no erosion or destruction of bone.

Fig. 99

Schematic illustration of tumour causing bone erosion or destruction, including extension into the hard palate and middle nasal meatus, except extension to posterior wall of maxillary sinus and pterygoid plates.

Fig. 100

Schematic illustration of tumour invades any of the following: bone of posterior wall of maxillary sinus, subcutaneous tissues, floor or medial wall of orbit, pterygoid fossa, ethmoid sinuses.

Fig. 101

Schematic illustration of tumour invades any of the following: bone of posterior wall of maxillary sinus, subcutaneous tissues, floor or medial wall of orbit, pterygoid fossa, ethmoid sinuses.

Fig. 102

Schematic illustration of tumour invades any of the following: anterior orbital contents, skin of cheek, pterygoid plates, infratemporal fossa, cribriform plate, sphenoid or frontal sinuses.

Fig. 103

Schematic illustration of tumour invades any of the following: anterior orbital contents, skin of cheek, pterygoid plates, infratemporal fossa, cribriform plate, sphenoid or frontal sinuses.

Fig. 104

Schematic illustration of tumour invades any of the following: orbital apex, dura, brain, middle cranial fossa, cranial nerves other than maxillary division of trigeminal nerve (V2), nasopharynx or clivus.

Fig. 105


Nasal Cavity and Ethmoid Sinus


















T1 Tumour restricted to one subsite of nasal cavity or ethmoid sinus, with or without bony invasion (Figs. 106, 107)
T2 Tumour involves two subsites in a single site or extends to involve an adjacent site within the nasoethmoidal complex, with or without bony invasion (Fig. 108)
T3 Tumour extends to invade the medial wall or floor of the orbit, maxillary sinus, palate, or cribriform plate (Fig. 109)
T4a Tumour invades any of the following: anterior orbital contents, skin of nose or cheek, minimal extension to anterior cranial fossa, pterygoid plates, sphenoid or frontal sinuses (Fig. 110)
T4b Tumour invades any of the following: orbital apex, dura, brain, middle cranial fossa, cranial nerves other than V2, nasopharynx or clivus (Fig. 111)
Schematic illustration of tumour restricted to one subsite of nasal cavity or ethmoid sinus, with or without bony invasion.

Fig. 106

Schematic illustration of tumour restricted to one subsite of nasal cavity or ethmoid sinus, with or without bony invasion.

Fig. 107

Schematic illustration of tumour involves two subsites in a single site or extends to involve an adjacent site within the nasoethmoidal complex, with or without bony invasion.

Fig. 108

Schematic illustration of tumour extends to invade the medial wall or floor of the orbit, maxillary sinus, palate, or cribriform plate.

Fig. 109

Schematic illustration of tumour invades any of the following: anterior orbital contents, skin of nose or cheek, minimal extension to anterior cranial fossa, pterygoid plates, sphenoid or frontal sinuses.

Fig. 110

Schematic illustration of tumour invades any of the following: orbital apex, dura, brain, middle cranial fossa, cranial nerves other than V2, nasopharynx or clivus.

Fig. 111


Regional Lymph Nodes


See Head and Neck Tumours.


pTN Pathological Classification


The pT and pN categories correspond to the T and N categories.


Summary

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Dec 15, 2022 | Posted by in ONCOLOGY | Comments Off on CAVITY AND PARANASAL SINUSES (ICD‐O C30.0, 31.0, 1)

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