Mammary epithelial hyperplasia is classified into three distinct types: lobular (arising from the intralobular ducts
), ductal (arising from the extralobular ducts), and adenosis (CASSALI et al., 2011).
In accord with the previous finding in the submandibular gland of adult rats (Prestifilippo et at.), the present study confirmed dominant CB1-immunoreactivity confined to the ductal cells of the proximal and distal intralobular ducts
of the submandibular gland in young adult mice on P4W-P8W.
It composed mostly of pale white connective tissues, interlobular septa with scattered lobules containing small dark cross cuts of many intralobular ducts. There were very few, if any, secretory alveoli in the inactive gland most of the interlobular tissue is adipose tissue.
As demonstrated in the histopathological appearance of figure 10, it shows the presence of mostly pale white connective tissue interlobular septa with scattered lobules containing small dark cross cuts of many intralobular duct with intact alveoli.
The secretions of the acini pass through the intralobular ducts which include the intercalated and striated ducts and then interlobular or excretory ducts and ultimately into one or more main ducts which discharge saliva into the oral cavity1.
Both segments of the intralobular ducts are poorly developed, and intercalated ducts are virtually absent.
The fibroinflammatory process extends to the interlobular and intralobular ducts
as well as to the acinar component, which progressively display atrophy and are replaced by fibrosis (Figure 4).
They are purely serous glands and excretory intralobular ducts, intercalated and particularly striated ones, are very numerous.
The great quantity of intralobular ducts in the parotid glands of D.
On the contrary, in cases with moderate or advanced changes, marked immunoreactivity was observed in the interlobular area and in the area surrounding both the acini and intralobular ducts