Papillary Hidradenoma
Encyclopedia
A Papillary hidradenoma, also hidradenoma papilliferum, is a sharply circumscribed nodule
of ectopic breast tissue usually found on the labia majora
or the interlabial folds. It is benign
tissue (not cancerous) but is often confused clinically with carcinoma
of the vulva
because of its tendency to ulcerate. Histologically it appears identical to an intraductal papilloma
of the breast.
Nodule (medicine)
For use of the term nodule in dermatology, see Nodule In medicine, a nodule refers to a relatively hard, roughly spherical abnormal structure....
of ectopic breast tissue usually found on the labia majora
Labia majora
The labia majora are two prominent longitudinal cutaneous folds that extend downward and backward from the mons pubis to the perineum and form the lateral boundaries of the pudendal cleft, which contains the labia minora, interlabial sulci, clitoral hood, clitoral glans, frenulum clitoridis, the...
or the interlabial folds. It is benign
Benign
A benign tumor is a tumor that lacks the ability to metastasize. Common examples of benign tumors include moles and uterine fibroids.The term "benign" implies a mild and nonprogressive disease. Indeed, many kinds of benign tumors are harmless to human health...
tissue (not cancerous) but is often confused clinically with carcinoma
Carcinoma
Carcinoma is the medical term for the most common type of cancer occurring in humans. Put simply, a carcinoma is a cancer that begins in a tissue that lines the inner or outer surfaces of the body, and that generally arises from cells originating in the endodermal or ectodermal germ layer during...
of the vulva
Vulva
The vulva consists of the external genital organs of the female mammal. This article deals with the vulva of the human being, although the structures are similar for other mammals....
because of its tendency to ulcerate. Histologically it appears identical to an intraductal papilloma
Intraductal papilloma
Intraductal papillomas of the breast are relatively common lesions with an incidence of approximately 2-3% in humans.They are the most common cause of bloody nipple discharge in women age 20-40 and generally do not show up on mammography due to their small size, so the next step in treatment would...
of the breast.