Tumors of Nose and PNS MCQs

Ohngren’s line is from medial canthus of the eye to the angle of mandible. This line divides maxilla into superstructure and infrastructure. The malignancy of superstructure has poor prognosis due to proximity to orbit. In nickel exposed patients, the most common malignancy is squamous cell carcinoma. Ringertz tumour is other name of inverted papilloma of nose. It is a benign but locally invasive and can show malignant conversion. Esthesioneuroblastoma is a malignant tumour which originates from the olfactory neuroepithelium of nose. Also called olfactory placode tumour. Reference - Diseases of Ear, Nose and Throat & Head and Neck Surgery by P L Dhingra , 8 th Edition, pg. no – 241,242, 236, 239

Angiofibroma is a pink, firm, 1- to 2-mm dome-shaped papule most commonly located over the nasal bridge and cheeks and is a benign tumor made of blood vessels and connective tissue that can appear as small, red bumps on the face, particularly on the cheeks and nose. It's a type of vascular tumor that's common in patients with tuberous sclerosis, a genetic disorder.

Ringertz tumor arises from lateral wall of nose. Inverted Papilloma (Transitional Cell Papilloma or Ringertz Tumour or Schneiderian Papilloma) It is a tumour of the non-olfactory mucosa of nose ( Schneiderian membrane ) and paranasal sinuses. Most common site of origin is lateral wall of nose in the middle meatus It is a benign but locally invasive tumour and can show malignant conversion. Human papilloma virus is thought to be responsible for its aetiology. Clinically, men are affected more than women in the age group of 40–70. Treatment - Medial maxillectomy is the treatment of choice. These days endoscopic approach is preferred. Radiotherapy is not advised as it may induce malignancy. Reference - Diseases of Ear, Nose and Throat & Head and Neck Surgery by P L Dhingra , 8 th Edition, pg. no – 236

In woodworkers , adenocarcinomas of ethmoid sinus are more common. Overall, maxillary sinus is the most common sinus to develop malignancy. Squamous cell and anaplastic carcinoma are more common in nickel industry workers. Reference - Diseases of Ear, Nose and Throat & Head and Neck Surgery by P L Dhingra, 8 th Edition, pg. no – 241