Penis and scrotum
Inflammatory lesions
Tancho nodules / paraffinomas / lipogranulomas

Authors: Antonio Cubilla, M.D., Alcides Chaux, M.D. (see Authors page)

Revised: 2 April 2018, last major update February 2010

Copyright: (c) 2002-2018,, Inc.

PubMed Search: Tancho nodules

Cite this page: Cubilla, A., Chaux, A. Tancho nodules / paraffinomas / lipogranulomas. website. Accessed November 14th, 2018.
Definition / general
    Tancho nodules:
    • Custom among some Asian populations to implant, inject or insert paraffin or other foreign material (such as glass spheres) under the skin of the penis to improve sexual pleasure
    • Tancho is a brand of hair pomade widely used in the Far East and Southeast Asia

    • Custom among some Asian populations to enlarge penis by injecting mineral oil, paraffin (paraffinoma), silicone or vaseline (Urology 2008;71:1132)
    • Inflammatory / foreign body reaction may occur years after the injection
Clinical features

Tancho nodules:
  • Palpable subcutaneous firm nodules

  • Distortion of organ with evident gross abnormalities
  • May extend to adjacent structures such as scrotum
Case reports
  • May require local surgical resection
Clinical images

Images hosted on other servers:

Intraurethral paraffin

Microscopic (histologic) description
Tancho nodules:
  • Inflammatory foreign body reaction with variable fibrosis surrounding inserted material

  • Numerous vacuoles ranging from tiny to large and cystically dilated (pseudocysts)
  • Stroma may be sclerotic (sclerosing lipogranuloma) and contain inflammatory cells and foreign body giant cells