Chemosensory Functions After Glossectomy—A Cross-Sectional Pilot Study

Grasl S, Janik S, Wiederstein S, Haymerle G, Renner B, Mueller CA (2022)

Publication Type: Journal article

Publication year: 2022


DOI: 10.1002/lary.30454


Objective: To evaluate potential interactions and compensatory mechanisms of subjectively impaired taste function with ortho- and retronasal olfaction after glossectomy. Study Design: In this cross-sectional pilot study, chemosensory functions were assessed in 25 patients with tongue carcinomas after glossectomy. The orthonasal-, retronasal-, and gustatory functions were tested with a mean time of 25 months after surgery with the Sniffin’ Sticks odor identification test kit (ISST), the Candy Smell-27 test (CST-27) and the Taste strip test (TST). Visual analog scales (VAS) were additionally used for self-assessment of taste, flavor perception, and odor ranging from 0 (no perception) to 10 (excellent perception) and further correlated with our psychophysical evaluated outcome measures. Results: The TST, ISST, and CST-27 tests revealed that only eight (32%) and 13 (52%) glossectomy patients had normal taste and orthonasal function, e 21 (84%) patients showed normal retronasal function. Importantly, neither extent of resection and reconstruction nor prior radiotherapy affected chemosensory functions. Contrary, 20 (80%) patients rated their taste and flavor perception as acceptable (VAS >5). Results of the TST, ISST, and CST-27 tests did not correlate with the equivalent self-assessments of taste (p = 0.260, r = 0.234), odor (p = 0.588, r = −0.114), and flavor (p = 0.728, r = 0.073) perception. Conclusion: There was a significant discrepancy between self-perception of taste and flavor and assessed gustatory function after glossectomy. A contribution of the intact retronasal olfactory system could be a possible explanation of our results. Level of Evidence: 4 Laryngoscope, 2022.

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Grasl, S., Janik, S., Wiederstein, S., Haymerle, G., Renner, B., & Mueller, C.A. (2022). Chemosensory Functions After Glossectomy—A Cross-Sectional Pilot Study. Laryngoscope.


Grasl, Stefan, et al. "Chemosensory Functions After Glossectomy—A Cross-Sectional Pilot Study." Laryngoscope (2022).

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