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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