Download Pathophysiology(Cervical Cancer) Case Study ...
Description
PATHOPHYSIOLOGY (NARRATIVE FORM)
Cancer of the cervix typically originates from a dysplastic or premalignant lesion
previously
present
at
the
active
squamous
columnar
junction.
The
transformation from mild dysplastic to invasive carcinoma generally occurs slowly within several years, although the rate of this process varies widely.
Carcinoma in situ is particularly known to precede invasive cervical cancer in most cases. In different reported series of patients with untreated carcinoma in situ who were followed up for many years, invasive carcinoma developed in about 30% of patients at 10 years and in about 80% of patients at 30 years. However, the carcinoma-in-situ lesion may regress after the initial diagnosis; such an occurrence was reported in 17 (25%) of 67 patients who were followed up for at least 3 years. Progression to invasive carcinoma becomes established and is considered irreversible once the malignant process extends through the basement membrane and invasion of the cervical stroma occurs.
Multiple local growth patterns of invasive cervical
have been described,
extend into the endocervical canal result in what has been referred to as a barrelshaped cervix.
The infiltrative growth pattern leads to a stone-hard cervix that may be predicated to have minimal visible ulcerations or an exophytic mass. Infiltrative exocervical lesions tend to invade the vaginal fornices and the upper part of the vagina. On the other hand, infiltrative endocervical lesions tend to extend into the corpus
and
the
lateral
parametrium.
PATHOPHYSIOLOGY (SCHEMATIC DIAGRAM) PREDISPOSING FACTORS Age (64 years old) Sex (exclusively for female) Heredity (history of cervical CA)
Somatic Mutation in DNA or Gene
Altered genetic structure and autoimmune response
Activated oncogene or deactivate cell tumor suppressor gene
Malignant transformation of lymphoid stem cells
Formation of clones or uncontrolled proliferation lymphocytes
Cervix cells dysplasia after lymphoblastic cell event
Acquisition of invasive characteristics
PRECIPITATING FACTORS Sexual partner who had multiple sexual partner (HPV exposure) Low economic status Diet and lifestyle Multiple Pregnancies (7 and above delivered)
Tumor cells engulf lymphocytes
Through sexual intercourse: HPV penetrates squamous columnar epithelial cervix cells
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