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Visual Treats in Dermatology
2022
:2;
3
doi:
10.25259/CSDM_74_2021

Infiltrated and nodular pinna – A distinctive feature of lepromatous leprosy

Department of Dermatology and STD, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
Corresponding author: Arunachalam Narayanan, Department of Dermatology and STD, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India. narayanan359@gmail.com
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This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-Share Alike 4.0 License, which allows others to remix, transform, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.

How to cite this article: Narayanan A, Akshay SP. Infiltrated and nodular pinna – A distinctive feature of lepromatous leprosy. CosmoDerma 2022;2:3.

A 38-year-old male patient presented with thickening, infiltration, and nodularity of the ear lobes [Figure 1a] bilaterally for 1 year. In addition, he had diffuse infiltration of face, with madarosis of eyebrows [Figure 1b]. The patient also had bilateral thickening of greater auricular and ulnar nerves. Slit skin smear from ear lobule was highly positive (bacteriological index = 6+). Based on the characteristic history, clinical features, and slit skin smear, we made a diagnosis of lepromatous leprosy with ear involvement. Mycobacterium leprae preferentially affects the cooler body sites such as pinna and lobule. External ear manifestations of Hansen’s disease include infiltration, nodule formation, ulceration with “nibbled” or “rat-bitten” defect, megalobule, and auricular chondritis. Infiltrated papular and nodular lesions in the pinna are a distinctive feature of lepromatous leprosy. However, this presentation can also be seen in trauma/hematoma, lupus pernio, lupus vulgaris, multicentric reticulohistiocytosis, lymphocytoma cutis, Rosai-Dorfman disease, relapsing polychondritis, and auricular pseudocyst. Since cases with isolated pinna involvement have been reported,[1] Hansen’s disease should be considered in patients presenting with infiltrated, nodular lesions on pinna.

Figure 1:: (a) Involvement of the pinna in the form of infiltration, nodularity, and thickening. (b) Diffuse infiltration of face with bilateral madarosis of eyebrows.

Declaration of patient consent

Patient`s consent is not needed as patient`s identity is neither disclosed nor compromised.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.

References

  1. , . Cauliflower ear in lepromatous leprosy. Am J Trop Med Hyg. 2021;105:1444-5.
    [CrossRef] [PubMed] [Google Scholar]

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