Parosmia COVID-19 Related Treated by a Combination of Olfactory Training and Ultramicronized PEA-LUT: A Prospective Randomized Controlled Trial.

During COVID-19 pandemic, clinicians have had to deal with an ever-increasing number of cases of olfactory disturbances after SARS-CoV-2 infections and in some people this problem persisted for long time after negativization from virus. This a prospective randomized controlled trial aims at evaluating the efficacy of ultramicronized palmitoylethanolamide (PEA) and Luteolin (LUT) (umPEA-LUT) and olfactory training (OT) compared to OT alone for the treatment of smell disorders in Italian post-COVID population. We included patients with smell loss and parosmia who were randomized and assigned to Group 1 (intervention group; daily treatment with umPEA-LUT oral supplement and OT) or Group 2 (control group; daily treatment with placebo and OT). All subjects were treated for 90 consecutive days. The Sniffin' Sticks identification test was used to assess the olfactory functions at the baseline (T0) and the end of the treatment (T1). Patients were queried regarding any perception of altered olfaction (parosmia) or aversive smell, such as cacosmia, gasoline-type smell, or otherwise at the same observational points. This study confirmed the efficacy of combination of umPEA-LUT and olfactory training as treatment of quantitative smell alteration COVID-19 related, but the efficacy of the supplement for parosmia was limited. UmpEA-LUT is useful for the treatment of brain neuro-inflammation (origin of quantity smell disorders) but has limited/no effect on peripheral damage (olfactory nerve, neuro-epithelium) that is responsible of quality disorders.

Choanal Polyp with Osseous Metaplasia: Radiological and Therapeutic Management of a Rare Case and a Review of Bone Metaplastic Lesions of Sinonasal Tract.

BACKGROUND Osseous metaplasia is a heterotopic normal bone in soft tissues. It is occasionally found in mucosal polyps of the external auditory canal, tongue, gut, stomach, nasal cavity, and uterus. Choanal polyp with osseous metaplasia originating from the lateral wall of the nasopharynx has not been previously reported. In fact, osseous metaplasia in nasal polyps represents a very uncommon histological finding with only 12 cases described in the literature. CASE REPORT We reported here, the clinical, radiological, and therapeutic management of a nasopharynx choanal polyp in a patient with severe nasal obstruction and rhinolalia history. Endoscopic examination of nasal cavities revealed a polypoid-like mass in the left nasal fossa, extending to the choanal area and nasopharynx. Computed tomography scan and contrast-enhanced magnetic resonance imaging confirmed the presence of a solitary and lobulated mass in the choanal area and nasopharynx. We performed the removal of the mass through careful hemostasis of left sphenopalatine artery using both transnasal and transoral paths, with no complications for the patient. Histopathological examination of the biopsy revealed a benign inflammatory polyp with osseous metaplasia. No recurrence was noted 24 months after surgery. CONCLUSIONS The incidence of ossifying areas in nasal polyps is very low, with only 12 cases reported in the literature. Ossifying polyps originating from the lateral wall of nasopharynx has never been reported before. The use of a combined endoscopic and transoral surgical approach was shown to be reliable in terms of adequate exposure and visualization of the lesion, control of bleeding, and complete removal of the mass.