16. Dermatofibroma

 
Quotation from the 9th edition of Lever's:
 
"Benign fibrous histiocytoma (BFH) has also been known as dermatofibroma, histiocytoma, and sclerosing hemangioma. These common tumors occur usually on the extremities of young adults"
 
"Neoplasm versus Reactive Process—The view has been expressed that BFH are not true neoplasms but reactive fibroblastic proliferation subsequent to trauma, including arthropod bites. These tumors have been referred to as 'nodular subepidermal fibrosis," and are regarded by some authorities as fibrosing inflammatory lesions, even in the presence of 'monster cells." The demonstration of clonality in some cases of dermatofibroma and reports of metastasizing cellular dermatofibroma suggest a neoplastic nature."
 
Reference in the 9th edition to concepts contrary by A. Bernard Ackerman et al. (ABA): None.
 
Statements contrary by ABA:
 
"A dermatofibroma results from trauma to the skin, the dermis in particular, but sometimes the subcutaneous fat, too. The most common of those traumas are assaults by arthropods, punctures of other kinds, and rupture of follicles and of cysts, usually infundibular ones. In brief, such traumas induce an inflammatory response that can be divided into three stages that overlap: granulation tissue accompanied often by hemorrhage, granulomatous inflammation, and fibrosis."
 
Ackerman AB, Böer A, Bennin B, Gottlieb GJ. Histologic Diagnosis of Inflammatory Skin Diseases, 3rd Edition. New York: Ardor Scribendi, 2005.
 
Other works of ABA in which the ideas contrary are expressed:
 
1. Ackerman AB. Chongchitnant N, Sanchez J, Guo Y. Histologic Diagnosis of Inflammatory Skin Diseases. 2nd edition. Baltimore: Lippincott Williams & Wilkins, 1997.
 
2. Ackerman AB, Couch AP, Crum CP, Scully RE. Reactive (changes, histiocytes, hyperplasia, fibroplasia, proliferation, atypia, etc.)? Dermatopathology: Practical & Conceptual 3(4):348-354, 1997.
 
3. Ackerman AB, Cavegn BM, Casintahan MF, Robinson MJ. Resolving Quandaries in Dermatology, Pathology and Dermatopathology. Vol 1 pp 75 Promethean Medical Press/Waverly, 1995.
 
4. Ackerman AB, Ragaz A. The Lives of Lesions: Chronology in Dermatopathology. pp 37. Masson Publishing USA, Inc., 1984. (Now on the list of Ardor Scribendi, NYC)
 
5. Ackerman AB. Histologic Diagnosis of Inflammatory Skin Diseases: A Method by Pattern Analysis. Philadelphia: Lea and Febiger, 1978.