Pseudocyst of the Auricle Differential Diagnoses

Updated: Nov 07, 2019
  • Author: William P Baugh, MD; Chief Editor: Dirk M Elston, MD  more...
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DDx

Diagnostic Considerations

Table. Comparison of Characteristics of Four Auricular Conditions. (Open Table in a new window)

 

Pseudocyst of the auricle

Chondrodermatitis chronica helices

Relapsing polychondritis

Subperichondrial hematoma

Swelling

Localized

Localized

Diffuse

Localized

Skin involvement

Rare

Yes, crusting/ulceration

Yes, erythematous

Rare

Pain

Rare

Common (from ulceration)

Common (extremely tender)

Common

Systemic Symptoms

No

No

Yes (involvement of other cartilage)

No

Histology

Intracartilaginous, cystic defect, granulation tissue

Subperichondrial granulation tissue, cystic dilatation rare

Acute inflammable cells seen; antibody deposition on basement membrane during immunofluorescence

Inflammatory cells with degraded blood products

Adapted from Lim CM, et al. “Pseudocyst of the Auricle.” 2002.

Differential Diagnoses