1 cm without atypical epithelial proliferation
was seen in a lactiferous duct in 1 case.
Nuclear staining for estrogen receptor and paired box gene 8 (PAX-8) was diffusely present in the glandular and papillary epithelial proliferation
and focally (weakly) present in the corded and hyalinized areas (Figure 2, B).
9) Histologically, the normal epithelium can undergo prominent epithelial proliferation
and be transformed into closely packed glands with cribriform and sievelike patterns.
Basaloid follicular hamartoma (BFH) is a rare, benign, superficial malformation of hair follicles that presents histologically as an epithelial proliferation
of basaloid cells and clinically in various forms, with and without associated diseases.
Mild degree of mucosal epithelial proliferation
is frequent in fallopian tubes removed for a diversity of reasons, and it can be found in up to 66% of tubal ligations.
In the original review article of Ueng et al, the criteria of Page et al for diagnosing a lesion as a papilloma with ductal carcinoma in situ (DCIS) is described as when "the papilloma shows any area of uniform histology and cytology consistent with noncomedo DCIS that is greater than 3 mm in size, whereas papillomas that contain a histologically identical epithelial proliferation
that is greater or equal to 3 mm in size are classified as papillomas with atypia.
The common feature characterizing papillary lesions is a papillary, arborescent epithelial proliferation
supported by fibrovascular stalks with or without an intervening myoepithelial (ME) cell layer.
Primary peritoneal serous borderline tumor is a rare epithelial proliferation
that can present as an incidental finding at laparotomy and raises concern for a primary ovarian tumor with peritoneal implants.
17) We speculate that mast cells may be involved in the formation of pulmonary hamartomas or PT by similar mechanisms, such as producing cytokines, which in turn promote the epithelial proliferation
However, epithelial proliferation
indices showed no obvious correlation with either the type of CCAM or the age of the child at the time of resection (Table).