{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,5]],"date-time":"2026-09-05T18:51:53Z","timestamp":1788634313260,"version":"build-2803163510"},"reference-count":25,"publisher":"Index Copernicus","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Otolaryngol Pol"],"published-print":{"date-parts":[[2023,9,29]]},"abstract":"<jats:p>&lt;br&gt;&lt;b&gt;Introduction:&lt;\/b&gt; Bell\u2019s palsy is still the diagnosis of exclusion. In most patients it does not progress, it is unilateral, and selflimiting. Additionally, the majority of patients recover spontaneously within 3 weeks. It is well known that all patients with irreversible facial nerve paresis (FNP) need further examinations to exclude the organic, infectious, metabolic, and autoimmunological causes of the palsy. The goal of the study was to assess the frequency of malignancies hidden under the diagnosis of \u201cBell\u2019s palsy\u201d.&lt;\/br&gt; &lt;br&gt;&lt;b&gt;Aim:&lt;\/b&gt; We aimed to create a diagnostic algorithm to avoid failures concerning patients whose only symptom of parotid gland cancer was irreversible FNP.&lt;\/br&gt; &lt;br&gt;&lt;b&gt;Material and methods:&lt;\/b&gt; We analyzed 253 consecutive patients with FNP treated in our department in the last 5 years. The subject of the study was \u201cBell\u2019s palsy\u201d cases. All patients with irreversible FNP were reassessed in 6\u201312 months. We underlined all shortcomings in the diagnostics of those in whom malignancies were found in MRI of the neck and presented the proposal for a diagnostic algorithm to avoid missing such an entity.&lt;\/br&gt; &lt;br&gt;&lt;b&gt;Results:&lt;\/b&gt; Bell\u2019s palsy was observed in 157\/253 patients (62.06%), in 36\/157 (22.92%) it remained permanent. In 4\/36 patients (11.11%) with irreversible FNP, which constituted 2.54% of all \u201cBell\u2019s palsy\u201d cases, parotid gland deep lobe mass was found in MRI. In one patient, infiltration of the skull base was diagnosed. Adenoid cystic carcinoma was confirmed in final histopathology in all cases.&lt;\/br&gt; &lt;br&gt;&lt;b&gt;Conclusions:&lt;\/b&gt; Our experience has shown that irreversible FNP can be a revelator of the malignant tumor located in the deep lobe of the parotid gland. Contrast-enhanced MRI covering intra- and extracranial segments of the facial nerve should be ordered in all cases of FNP without recovery after 4 months. Repeated imaging should be considered in undiagnosed cases. The main point of our study is to underline that the assessment of the deep lobe of the parotid gland with MRI should be included in the standard diagnostic protocol in all irreversible \u201cBell\u2019s palsy\u201d cases.&lt;\/br&gt;<\/jats:p>","DOI":"10.5604\/01.3001.0053.4090","type":"journal-article","created":{"date-parts":[[2023,9,29]],"date-time":"2023-09-29T08:28:07Z","timestamp":1695976087000},"page":"8-13","source":"Crossref","is-referenced-by-count":2,"title":["Irreversible facial nerve palsy as a revelator ofparotid gland cancer"],"prefix":"10.5604","volume":"77","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9946-2851","authenticated-orcid":false,"given":"Joanna","family":"Marsza\u0142","sequence":"first","affiliation":[{"name":"Department of Otolaryngology, Head and Neck Surgery, Poznan University of Medical Sciences, Poznan, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7862-1411","authenticated-orcid":false,"given":"Anna","family":"Bartochowska","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology, Head and Neck Surgery, Poznan University of Medical Sciences, Poznan, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hanna","family":"Klimza","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology, Head and Neck Surgery, Poznan University of Medical Sciences, Poznan, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Piotr","family":"Nogal","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology, Head and Neck Surgery, Poznan University of Medical Sciences, Poznan, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0006-6352","authenticated-orcid":false,"given":"Ma\u0142gorzata","family":"Wierzbicka","sequence":"additional","affiliation":[{"name":"Institute of Human Genetics, Polish Academy of Sciences, Poznan, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"3689","reference":[{"key":"607244r1","doi-asserted-by":"crossref","unstructured":"Finsterer J.: Management of peripheral facial nerve palsy. 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