Tumor of the Follicular Infundibulum



Tumor of the Follicular Infundibulum


David Cassarino, MD, PhD










Tumor of the follicular infundibulum (TFI) is characterized by a superficial, plate-like distribution parallel to the epidermis. Note the multiple connections to an adjacent follicular structure image.






High magnification of TFI shows a central area of infundibular-type keratinization surrounded by bland squamous cells showing focal cytoplasmic granules image. Note the focal areas of peripheral palisading image.


TERMINOLOGY


Abbreviations



  • Tumor of the follicular infundibulum (TFI)


Synonyms



  • Basal cell hamartoma with follicular differentiation


  • Mehregan tumor of follicular infundibulum


Definitions



  • Benign proliferation of mature adnexal keratinocytes showing a superficial plate-like formation with multiple epidermal attachments

Jul 8, 2016 | Posted by in PATHOLOGY & LABORATORY MEDICINE | Comments Off on Tumor of the Follicular Infundibulum
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