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In this section we have spot diagnoses posted on a daily basis since June 2010, now over 1700! You can review the archived cases and read the suggested diagnoses by users and the final comment by Dr Uma Sundram, the Editor-in-Chief and main spot diagnosis host. Case are uploaded each week day by 10 a.m. UK time with the correct diagnosis will generally be posted at 8 p.m. UK time. Why not view the most recent spot diagnosis and proffer a diagnosis?

Case Number : Case 811 - 26th July Posted By: Guest

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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50 years old female. Fleshy swelling present 18/12. Noticed by hairdresser. ?Cyst

Case posted by Dr. Richard Carr.


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Guest Engin Sezer

Posted

Proliferating trichilemmal tumour as a response to foreign body material

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Guest Romualdo

Posted

I think the foreign material seen in this proliferating trichilemmal tumor is simply calciym deposited in the necrotic cornified center of some tumor lobules.

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Guest Maria George

Posted

malignant proliferating tricholemmal tumor with dystrophic or metaplastic calcification.

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Robledo F. Rocha

Posted

Proliferating tricholemmal tumor with dystrophic calcification.

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Sasi Attili

Posted

[quote name='Robledo F. Rocha' timestamp='1374840999']
Proliferating tricholemmal tumor with dystrophic calcification.
[/quote]
Agree with this differential.......Though we are not seeing the entire/ silhouette of the lesion and this could be part of a follicular SCC?

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Mark A. Hurt MD

Posted

Proliferative tricholemmal (isthmus-catagen) cystic carcinoma

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Dr. Mona Abdel-Halim

Posted

Proliferating trichilemmal cyst ( pilar tumor)

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Dr. Richard Carr

Posted

Wanted to give you a low power - don't seem to be able to just paste in an image. Have sent a couple more images to Iskander to add and will await further comments.

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Guest Jim Davie MD

Posted

[size=4]I agree with several of the above: [/size][b] Proliferating trichilemmal cyst/tumor.[/b]
1. Few normal mitotic figures, ( if we are being shown the worst of it ).
2. Low-grade pseudocarcinomatous bosselated architecture, and low grade cytologic atypia with reactive features including squamous eddies.
3. The presence of extensive central dystrophic calcification (common in these lesions) and clinical history is helpful...consistent with a lesion that has been around for a long time without being obvious to the patient. (The hairdresser was the one to note it). A malignant pilar tumor would be more likely to have faster growth and not be so indolent, calcified and well circumscribed as this lesion.

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Guest Maria George

Posted

[b]
Verrucous carcinoma of the scalp[/b]

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Guest Graham Reilly

Posted

Proliferating trichilemmal cyst/carcinoma

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Guest Rodrigo Restrepo

Posted

[color=#1C2837][font=arial, verdana, tahoma, sans-serif][size=4]Proliferating trichilemmal tumour [/size][/font][/color]

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Dr. Hafeez Diwan

Posted

Proliferating pilar/trichilemmal tumor.

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Dr. Richard Carr

Posted

I put this in as a nice example of a proliferating pilar tumour

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