Close
New

Medscape is available in 5 Language Editions – Choose your Edition here.

 

Poroma Follow-up

  • Author: Timothy McCalmont, MD; Chief Editor: Dirk M Elston, MD  more...
 
Updated: Mar 05, 2014
 

Deterrence/Prevention

No preventative measures for benign adnexal neoplasms are known at this time.

Next

Complications

No complications are specifically associated with poromas. The surgical treatment of poromas can produce the same common complications (eg, infection, hemorrhage) associated with any minor surgical procedure.

Previous
Next

Prognosis

The prognosis of poromas is favorable because the lesions have no known clinical significance. Even poromatosis (multiple poromas) is not known to be associated with other anomalies. The risk of malignant transformation of a poroma is minimal and is thought to be similar to that of normal skin.

Previous
 
Contributor Information and Disclosures
Author

Timothy McCalmont, MD Director, UCSF Dermatopathology Service, Professor of Clinical Pathology and Dermatology, Departments of Pathology and Dermatology, University of California at San Francisco; Editor-in-Chief, Journal of Cutaneous Pathology

Timothy McCalmont, MD is a member of the following medical societies: Alpha Omega Alpha, American Medical Association, American Society of Dermatopathology, California Medical Association, College of American Pathologists, United States and Canadian Academy of Pathology

Disclosure: Received consulting fee from Apsara for independent contractor.

Specialty Editor Board

Richard P Vinson, MD Assistant Clinical Professor, Department of Dermatology, Texas Tech University Health Sciences Center, Paul L Foster School of Medicine; Consulting Staff, Mountain View Dermatology, PA

Richard P Vinson, MD is a member of the following medical societies: American Academy of Dermatology, Texas Medical Association, Association of Military Dermatologists, Texas Dermatological Society

Disclosure: Nothing to disclose.

Jeffrey Meffert, MD Associate Clinical Professor of Dermatology, University of Texas School of Medicine at San Antonio

Jeffrey Meffert, MD is a member of the following medical societies: American Academy of Dermatology, American Medical Association, Association of Military Dermatologists, Texas Dermatological Society

Disclosure: Nothing to disclose.

Chief Editor

Dirk M Elston, MD Professor and Chairman, Department of Dermatology and Dermatologic Surgery, Medical University of South Carolina College of Medicine

Dirk M Elston, MD is a member of the following medical societies: American Academy of Dermatology

Disclosure: Nothing to disclose.

References
  1. Kazakov DV, Kutzner H, Spagnolo DV, et al. Sebaceous differentiation in poroid neoplasms: report of 11 cases, including a case of metaplastic carcinoma associated with apocrine poroma (sarcomatoid apocrine porocarcinoma). Am J Dermatopathol. 2008 Feb. 30(1):21-6. [Medline].

  2. Harvell JD, Kerschmann RL, LeBoit PE. Eccrine or apocrine poroma? Six poromas with divergent adnexal differentiation. Am J Dermatopathol. 1996 Feb. 18(1):1-9. [Medline].

  3. McCalmont TH. A call for logic in the classification of adnexal neoplasms. Am J Dermatopathol. 1996 Apr. 18(2):103-9. [Medline].

  4. Chen CC, Chang YT, Liu HN. Clinical and histological characteristics of poroid neoplasms: a study of 25 cases in Taiwan. Int J Dermatol. 2006 Jun. 45(6):722-7. [Medline].

  5. Kakinuma H, Miyamoto R, Iwasawa U, Baba S, Suzuki H. Three subtypes of poroid neoplasia in a single lesion: eccrine poroma, hidroacanthoma simplex, and dermal duct tumor. Histologic, histochemical, and ultrastructural findings. Am J Dermatopathol. 1994 Feb. 16(1):66-72. [Medline].

  6. Chang O, Elnawawi A, Rimpel B, Asarian A, Chaudhry N. Eccrine porocarcinoma of the lower extremity: a case report and review of literature. World J Surg Oncol. 2011 Aug 22. 9:94. [Medline]. [Full Text].

  7. Kang MC, Kim SA, Lee KS, Cho JW. A case of an unusual eccrine poroma on the left forearm area. Ann Dermatol. 2011 May. 23(2):250-3. [Medline]. [Full Text].

  8. Kurashige Y, Yamamoto T, Okubo Y, Tsuboi R. Poroma with sebaceous differentiation: report of three cases. Australas J Dermatol. 2010 May. 51(2):131-4. [Medline].

  9. Barankin B, Shum D, Guenther L. Tumors arising in nevus sebaceus: a study of 596 cases. J Am Acad Dermatol. 2001 Nov. 45(5):792-3; author reply 794. [Medline].

  10. Jaqueti G, Requena L, Sanchez Yus E. Trichoblastoma is the most common neoplasm developed in nevus sebaceus of Jadassohn: a clinicopathologic study of a series of 155 cases. Am J Dermatopathol. 2000 Apr. 22(2):108-18. [Medline].

  11. Rabady DZ, Carlson JA, Meyer DR. Poroma of the eyelid. Ophthal Plast Reconstr Surg. 2008 Jan-Feb. 24(1):63-5. [Medline].

  12. Altamura D, Piccolo D, Lozzi GP, Peris K. Eccrine poroma in an unusual site: a clinical and dermoscopic simulator of amelanotic melanoma. J Am Acad Dermatol. 2005 Sep. 53(3):539-41. [Medline].

  13. Minagawa A, Koga H. Dermoscopy of pigmented poromas. Dermatology. 2010 Aug. 221(1):78-83. [Medline].

Previous
Next
 
Poroma. Courtesy of Jeffrey Meffert, MD.
This vascular-appearing poroma presented on the tip of the toe.
This intradermal poroma (dermal duct tumor) shows a sharply circumscribed border at scanning magnification. Highly vascularized and focally sclerotic stroma is also evident.
At higher magnification, ductal differentiation is conspicuous.
This juxtaepidermal poroma presents histopathologically in continuity with the epidermis, creating a seborrheic keratosis-like profile.
At higher magnification, this poroma is composed of monomorphous small keratinocytes with "cuboidal" cytomorphology.
This poroma shows focal sebaceous differentiation, indicating that the lesion is of folliculosebaceous-apocrine (rather than eccrine) lineage.
 
 
 
All material on this website is protected by copyright, Copyright © 1994-2016 by WebMD LLC. This website also contains material copyrighted by 3rd parties.