Keywords: mitotic index; melanoma staging; sentinel lymph node biopsy; melanoma;
Citation: Achenbach RE. Letter to the editor. Dermatol Pract Concept 2011;1(1):17. http://dx.doi.org/10.5826/dpc.0101a17.
Editor: Editor: Harald Kittler M.D.
History: Received: October 1, 2010. Accepted: December 17, 2010. Published: October 31, 2011.
Copyright: ©2011 Achenbach. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Competing interests: The authors have no conflicts of interest to disclose.
Corresponding Author: Ricardo E. Achenbach, M.D., Hospital Pirovano, Avenida Monroe 3555, Buenos Aires, Argentina. Email: email@example.com
In reply to “To count or not to count-that is the question”
I would like to comment on the editorial by Almut BÖer-Auer entitled, “To count or not to count-that is the question!”  and the subsequent survey about the mitotic index (MI) as a result of the seventh edition of the melanoma staging and classification of the AJCC, published by Balch et al . The staging and classification of melanoma by the so-called experts changes every two to four years and not precisely due to consistent and useful scientific progress in the diagnosis, etiopathogenic or therapeutic issues, but according to the objectives and interests preset by these same “experts.”
During my 30 years of clinical diagnosis, and especially since the year 2000, at which time I started reading and diagnosing the biopsies of each and every case at my hospital in which melanoma is suspected, the MI has had no importance for me at the moment of making a therapeutic decision, even though the dermatopathologists on my team have reported the MI as “low, medium or high.” I would never dream of phoning a pathologist to be informed of the MI in any case of melanoma. The MI given by the dermatopathologist in his report is irrelevant to me. On the other hand, if the melanoma has hemolymphatic invasion or neurotrophic differentiation, I would be more worried. Only a few histopathological features-whether it is in situ or not, if there is vascular embolus or neural compromise, its thickness with all its flaws-and almost nothing else will make me change my course of action after confirming a diagnosis. In my point of view, the importance given to the MI has only one and shameful purpose: to have more SLNBs (sentinel lymph node biopsy) made and therefore earn more money. The SLNB as it has been proven (MSLT-1)-and as foretold by Ackerman-is a procedure which does not offer any benefit to the patient with melanoma, no matter what its thickness is [3-7]. As it has frequently been written in this journal, I have been able to follow numerous cases of thin melanomas which have had dreadful endings in a short time and many other cases where melanomas were thick, ulcerated and with a lot of mitosis that after years remain alive. The consensus guidelines of staging and treatment for melanoma have reached the point that only papers and lectures which are in favor of SLNB are accepted and those that are against this procedure are censored . Most of these “experts” are surgeons or oncologists who practice SLNB as a routine even in melanomas which are less than 1 mm thick or thicker than 4 mm. As I see it, the dermatologists that face this neoplasia day after day are scarce. There is no doubt that the dermatologist is the best physician to address melanoma and, coupled with the dermatopathologist, is the one who will be responsible for the final diagnosis and treatment. Due to the narrow surgical margin with which we operate on the melanomas in our Department of Dermatology, we rarely refer any cases to a surgeon. We operate on them ourselves, and in our experience, we have had no cases of recurrence/persistence. Lymph node surgery is only carried out if some node is palpable at the moment of the diagnosis or in the follow-up. SLNB is not done in our department. We do inform the patient of the risk/benefit aspects of the procedure, and if the patient decides to have it performed, we refer him/her to another center.
It would be interesting to conduct another survey in the last issue of Dermatopathology: Practical & Conceptual in which well-known clinical dermatologists could be asked what importance he/she gives to the MI reports from the pathologist and if in a melanoma of 1 mm or less thick finding mitotic features would induce him/her to have a SLNB performed by a surgeon. It is my belief that such a survey would give us an idea of the number of dermatologists who think for themselves and those who just do what everybody does.
2. Balch CM, Gershenwald JE, Soong SJ, et al. Final version of 2009 AJCC melanoma staging and classification. J Clin Oncol 2009;20; 27(36):6199-206. Epub 2009 Nov 16.
3. Brett MC, Scott D, Howard WR. Sentinel lymph node biopsy and completion lymph node dissection for malignant melanoma are not standard of care. Clin Dermatol 2009; 27:350-4.
6. Zitelli JA. Sentinel lymph node biopsy: an alternate view. Dermatol Surg 2008;34(4):544-9. CrossRef
7. Medalie N, Ackerman AB. Sentinel node biopsy has not benefit for patients whose primary cutaneous melanoma has metastasized to lymph node and therefore should be abandoned now. Br J Dermatol 2004:151(2):298-307.
8. Thomas JM. Freedom of expression or protectionism in the debate on sentinel node biopsy in melanoma. J Am Acad Dermatol 2009;61(6):1079. CrossRef