Bitter sweet tympani

Purohit, Neeraj; Pratap, Rohit; Chawla, Om

doi:10.1017/s0022215107005646

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…Sporadic case reports document acute taste alteration as a sign of CTN damage from EACC [14], middle ear cholestatoma [48], EAC lesion [49], or atypical KO [50]. Regarding EACC, however, reports of FN invasion predominate [9][10][11][12][13].…”

Section: Discussionmentioning

confidence: 99%

Taste Alteration in External Auditory Canal Cholesteatoma: Indicator of Impending N VII Affection

Matosevic

Friedrich

Negoiaș

et al. 2023

ORL

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Introduction: External auditory canal cholesteatoma (EACC) is a rare disease, with an estimated incidence of approximately 1:1,000 adult and 1.6:1,000 pediatric otologic patients. Systematic studies of chronic ear disease and taste alteration prior to surgery are rare; in fact, there are no such studies for EACCs. Therefore, we describe chorda tympani nerve (CTN) dysfunction and the related clinical consequences in EACC patients. Methods/Study Design: Between 1992 and 2021, we retrospectively analyzed the symptoms, signs, and radiological and intraoperative descriptions of CTN involvement in 73 patients. Liquid taste tests and, since 2009, Taste StripsTM as well as an olfactory screening test (Smell DiskettesTM) have been performed for all symptomatic patients and, when feasible, all other EACC patients. Level of Evidence: 4. Results: Ten of 73 patients complained subjectively of dysfunction, and 8 showed abnormal taste test results. Four patients complained of olfactory dysfunction (3 cases with pathological taste tests). Gustatory dysfunction was most frequent in radiogenic EACC cases (n = 4), followed by postoperative EACC (n = 3). Two postoperative patients were asymptomatic despite abnormal test results. Rarely, patients with idiopathic (n = 2) and posttraumatic (n = 1) EACC showed acute taste dysfunction that was confirmed in each with abnormal test results. Discussion/Conclusion: CTN dysfunction often developed asymptomatically in chronic ears, except for idiopathic and posttraumatic EACCs under previous healthy middle ear conditions. Taste disturbance is not a cardinal symptom of EACC, but objective testing suggests that up to one out of 10 EACC patients with advanced disease may experience regional gustatory dysfunction prior to surgery. Especially in context of a new and acute presentation, regional taste dysfunction may alert the clinician of potential progressive EACC invasion and danger to the facial nerve.

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Section: Discussionmentioning

confidence: 99%

Taste Alteration in External Auditory Canal Cholesteatoma: Indicator of Impending N VII Affection

Matosevic

Friedrich

Negoiaș

et al. 2023

ORL

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Consequences of Stapes Surgery on Tongue Morphological Characteristics in Narrow Band Imaging, Gustatory Function and General Sensation: A Prospective Tertiary Center Study

et al. 2022

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(1) Background: Chorda tympani (CT) manipulation during stapes surgery affects its functions. We hypothesized that this alters tongue morphology and sensory functions. (2) Methods: Patients undergoing stapes surgery were tested 1 day preoperatively, 1 and 6 months postoperatively. Narrow band imaging contact endoscopy (NBI) was used to determine the number of fungiform papillae (Npapillae) and the total score of blood vessel morphology (NBItotal). The taste was tested with taste strips. General sensation was tested with a static two-point discrimination. Tests were performed on ipsilateral and contralateral side of the tongue. (3) Results: 52 otosclerosis patients were included in the study. There was a statistically significant decrease of NBItotal (p = 0.005), Npapillae (p = 0.009), sensation of sweet (p = 0.003), salty (p = 0.035), sour (p = 0.036), and bitter taste (p = 0.013) within the test side during the follow-up. A statistically significant impact on presence of dysgeusia for sweet was found 1 month postoperatively (p < 0.005). Postoperative decrease in two-point discrimination score did not reach a statistical significance (p = 0.056). (4) Conclusions: CT manipulation affects fungiform papillae density, vascular patterns and taste sensation. The general sensation of the tongue is not influenced by CT manipulation.

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Bitter sweet tympani

Abstract: During cholesteatoma surgery, the chorda tympani nerve must often be divided. We present an interesting case of a patient whose severe dysgeusia due to cholesteatoma resolved following section of the chorda tympani nerve.

Cited by 2 publications

References 8 publications

Taste Alteration in External Auditory Canal Cholesteatoma: Indicator of Impending N VII Affection

Taste Alteration in External Auditory Canal Cholesteatoma: Indicator of Impending N VII Affection

Consequences of Stapes Surgery on Tongue Morphological Characteristics in Narrow Band Imaging, Gustatory Function and General Sensation: A Prospective Tertiary Center Study

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