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Updated: Jan 23, 2026

A Mouse Ear Model for Allergic Contact Dermatitis Evaluation
Published on: March 24, 2023
[Evaluation of treatment modalities for contact granulomas]
Adrienne Heyduck1,2, Anja Pickhard3, Thomas Karl Hoffmann4
1Klinik für Hals-Nasen-Ohrenheilkunde, Universitätsmedizin Göttingen (Direktor Prof. Dr. D. Beutner), Robert-Koch-Str. 40, 37075 Göttingen.
Introduction:
There are merely heterogenous therapy modalities for contact granulomas (CG) without evidenced efficacy. The intention of our study was to evaluate possible risk factors as well as to demonstrate therapeutic successful approaches.
Methods:
Based on a retrospective analysis on 79 patients with CG we evaluated personal data for the first patient contact, for the first follow-up appointment (FA) averaged 3-4 months after the first contact, for the second follow-up appointment (SA) averaged 6-8 months after the first contact and for the last follow-up (LA) averaged 13 months after the first contact with collecting information concerning a possible gastrolaryngeal reflux disease as well as symptoms like harrumphing, hoarseness, hyperfunctional dysphonia as well as videostroboscopic signs. The therapeutic methods were prohibition of harrumphing, speech therapy, antazida therapy, surgical resection or a combination of therapy modalities. The group of FA and SA were divided into groups of complete remission group and incomplete remission group, symptoms and stroboscopic signs were statistically compared.
Results:
Harrumphing was an important cofactor in developing a CG. Although we couldn't verify a superior therapy modality a complete remission was archieved in 2/3rd of the reviewed cases. Even if there was an incomplete remission of the contact granuloma we were able to show a reduction of symptoms. Surgical resections of CG showed a significantly higher recurrence rate.
Discussion:
Even if we couldn't confirm a superior therapy modality we recommend a symptomatic therapy of CG with overall good remission rates. Primary surgical interventions are not advised owing to high recurrence rates.
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