Abnormal signal foci in the left nasal cavity of paranasal sinusitis is a descriptive term for cranial magnetic resonance, which may be sinusitis accompanied by nasal cavernous hemangioma, nasal inverted papilloma, nasal polyps and other diseases.
1. Nasal cavernous hemangioma: it may be a malformation tumor caused by vascular developmental disorder or malformation during vascular development, mostly occurring in the lateral wall of nasal cavity, anterior part of the upper turbinate, nasal bone, and sometimes may involve the sinuses. The size of the tumor varies, and the base is generally broad, red in color, soft, and often without peritoneum. If the tumor is accompanied by paranasal sinusitis, the above features can be found in the magnetic resonance examination.
2. Nasal involutional papilloma: this disease occurs in one side of the nasal cavity, and it can occur in the left lateral wall of the nasal cavity, the etiology and pathogenesis are still unclear, and it is generally harder than nasal polyps, red in color, and easier to bleed. It is easy to recur and characterized by malignant changes. When accompanied by paranasal sinusitis, the above magnetic resonance performance can be seen, according to the symptoms, signs and repeated, multi-site biopsy, the general diagnosis can be made.
3. Nasal polyps: under the stimulation of infection, allergy and inflammatory factors, the nasal mucosa can be hypertrophied and extremely edematous. Nasal cavity can be seen in 1 or more smooth surface, gray-white, translucent new organisms, like fresh lychee meat, touch very soft, and can move, not easy to bleed, and no tenderness. Blockage of the sinus orifices secondary to paranasal sinusitis is seen on MRI with the changes described above.
When MRI reveals abnormal signal foci in the left nasal cavity of paranasal sinusitis, it is important to seek medical attention to improve the systematic examination and seek the opinion of a specialist to understand the possible types of disease.