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Ear Pathology Online

Histopathological Examination of Ear Biopsy - External Ear

Dr Sampurna Roy MD


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Biopsies and excision specimens from the pinna and the superficial external auditory canal are the most common ear specimens received in most diagnostic laboratories.

Visit: Ear Biopsy: Clinical Details required for the Diagnosis ; Histopathological Examination of Ear Biopsy - Middle Ear ; Histopathological examination of Ear Biopsy- Inner Ear.

Specimens from the Pinna :

These are usually taken for the diagnosis of specific diseases such as Chondrodermatitis Nodularis Helicis , and for the diagnosis and treatment of neoplasms.

It is unlikely that the pinna will have been excised for neoplasia without a previous small biopsy.

Because of sampling problems in these biopsies, the tumour found on the excision specimens may have a different appearance from that diagnosed on biopsy.

A diagnosis of Basal Cell Carcinoma  with small areas of squamous differentiation may be changed to poorly differentiated Squamous Cell Carcinoma on the excision specimen.

Histopathology report :

For inflammatory conditions the report should comment on:

1.  Types of inflammation:

- acute, chronic, nonspecific, granulomatous;

- severity;

- tissues involved, such as cartilage;

2. Presence of :

- necrosis, such as of cartilage

- vasculitis

- ulceration and its depth.

For neoplasms the report should comment on:

- type and differentiation :

- whether there is epithelial dysplasia adjacent to the neoplasm :

- involvement of : (i) cartilage ; (ii) external auditory canal

- proximity of tumour to excision margins.


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Dr Sampurna Roy  MD

Consultant  Histopathologist (Kolkata - India)







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