14. Eccrine papillary adenoma

 
Quotation from the 9th edition of Lever's:
 
"Papillary eccrine adenoma (PEA) is a benign tumor that exhibits prominent eccrine differentiation and architectural features similar to tubular apocrine adenoma."
 
"However, evidence of decapitation secretion is lacking."
 
Reference in the 9th edition to concepts contrary by A. Bernard Ackerman et al. (ABA): None.
 
Statements contrary by ABA:
 
"By establishing criteria based on both silhouette and cytopathologic attributes, it is possible to distinguish accurately apocrine papillary adenoma from apocrine papillary carcinoma, and to do that with precision. We advise that most, if not all, so-called apocrine (or eccrine) papillary adenomas, in fact, are apocrine papillary carcinomas that range from very well differentiated to poorly differentiated. Apocrine adenomas do exist (e.g., apocrine hidradenoma, hidradenoma papilliferum, nipple adenoma, etc.), but they are very different from what has been termed apocrine or eccrine papillary adenoma. In sum, papillary eccrine adenoma is apocrine papillary carcinoma."
 
Deniake K, Ackerman AB. Papillary eccrine adenoma is apocrine papillary carcinoma. Dermatopathology: Practical & Conceptual 9(4), 2003.
 
Other works of ABA in which the ideas contrary are expressed:
 
1. Ackerman AB, Mones J. Resolving Quandaries in Dermatology, Pathology and Dermatopathology. pp 428. New York: Ardor Scribendi, 2001.