Serous tumors secrete serous fluids
and are originated by invagination of the surface epithelium of ovary.
Serous tumours, of which 50% are usually seen in women <40 years of age,  develop by invagination of the surface epithelium of the ovary and secrete serous fluid
. Serous tumours are generally benign; 5--10% have borderline malignant potential, and 20--25% are malignant.
They are characterized by the presence of chylous or serous fluid
within an irregularly dilated lymphatic channel.
The reason is that pathological features associated with chronic CSCR include the thickened irregular RPE layer, in addition to subretinal deposits composed of shed photoreceptor outer segments and subretinal and sub-RPE lipoproteinaceous clumps derived from long-standing serous fluid
. These features could have backscattering light intensity properties that are similar to those of the neovascular or fibrovascular components of the CNV, rendering both pathologies virtually indistinguishable from each other [13,16].
This shearing force results in a separation of the skin and subcutaneous adipose tissue from the underlying fascial plane, creating a potential space which can then become filled with blood, lymph, and serous fluid
CSCR or central serous retinopathy (CSR) occurs due to storage of serous fluid
beneath neurosensory retina after intercepting retinal pigment epithelium (RPE) layer.
Central serous retinopathy (CSR), also known as central serous chorioretinopathy (CSCR), a common retinal disorder which causes visual impairment was first introduced by Albrecht von Graefe in 1866 as 'recurrent central retinitis' (von Graefe, 1866) and later Donald Gass coined the term 'central serous chorioretinopathy' for its typical clinical presentation.1,2 It is characterized by the development of neurosensory retinal detachment from retinal pigment epithelium (RPE) mainly underneath macula with accumulation of sub retinal serous fluid
secondary to a single, multifocal or diffuse area of leakage in RPE.3,4 Young healthy males with age ranging from 30-50 years are more commonly affected and male to female ratio varies from 2.32: 1 to 6: 1 in various global populations.
The histological exam revealed smooth cystic walls, serous fluid
and no vegetation inside.
These patients may have severe hypertensive retinopathy findings such as retinal hemorrhage, subretinal serous fluid
accumulation, papilledema, and Elschnig spots.
The pericardium typically contains less than 50 mL of normal serous fluid
, most of which resides in various pericardial recesses and the oblique and transverse pericardial sinuses which are formed by reflections of the serous pericardial layer.
The fluid may be blood, lipids, or serous fluid
from disease processes such as Coat's disease, central serous retinopathy, choroidal tumours, optic pits, and uveal effusion syndrome.
On gross examination cheesy material with hair was found in 32(76.2%) serous fluid
in 4(9.5%) mucinous fluid in 3(7.1%) and chocolate colored fluid in one (2.4%) and teeth and bone in 5(11.9%) cases.