Cysts by location
Female reproductive system
Nabothian cyst (on the surface of the cervix)
Ovarian cyst (ovary)
Paratubal cyst (in front of fallopian tube behind the ovary)
Vaginal cystsGartners duct cyst (lateral to vaginal wall)
Bartholins cyst (at vaginal introitus)
Skenes duct cyst (Beside the urinary meatus)
Ectopic ureterocoele (around the urinary meatus)
Urethral diverticulum (In front of vaginal wall)

Male reproductive system
Rete tubular ectasia (within the rete testis)
Epididymal cyst (in the epididymis)
Hydrocele testis (testicle): clear fluid within the cavum vaginale
Spermatocele (testicle): fluid within the head of epididymis

Cutaneous and subcutaneous
Acne cyst – Pseudocysts associated with cystic acne - an inflammatory nodule with or without an associated epidermoid inclusion cyst
Arachnoid cyst (between the surface of the brain and the cranial base or on the arachnoid membrane)
Epidermoid cyst
Myxoid cyst (cutaneous condition often characterized by nail plate depression and grooves)
Pilar cyst (cyst of the scalp)
Pilonidal cyst (skin infection near tailbone)
Sebaceous cyst – sac below skin
Trichilemmal cyst – same as a pilar cyst, a familial cyst of the scalp

Head and neck
Odontogenic cyst
Ceruminous cyst (ear)
Chalazion cyst (eyelid)
Mucous cyst of the oral mucosa
Nasolabial cyst
Thyroglossal cyst
Vocal fold cyst

Chest
Fibrous cyst (breast cyst)
Pulmonary cyst (air pocket in the lung)
Pericardial cyst (abnormal dilatation of pericardium)

Abdomen
Liver cysts
Simple cysts
Hydatid cysts
Biliary cystadenoma
Biliary cystadenocarcinoma
Polycystic liver disease
Adrenal cyst (glands located above the kidneys) - It is a rare disease, affecting 0.06 to 0.18% of autopsy studies. It constitutes 5.4 to 6.0% of adrenal gland diseases. There are five major types of adrenal cysts: simple or endothelial cysts, true or epithelial cysts, pseudocysts, parasitic cysts, and cysts not classified elsewhere. 7% of the cysts can be malignant.
A cyst is a closed sac, having a distinct envelope and division compared with the nearby tissue. Hence, it is a cluster of cells that have grouped together to form a sac (like the manner in which water molecules group together to form a bubble); however, the distinguishing aspect of a cyst is that the cells forming the "shell" of such a sac are distinctly abnormal (in both appearance and behaviour) when compared with all surrounding cells for that given location. A cyst may contain air, fluids, or semi-solid material. A collection of pus is called an abscess, not a cyst. Once formed, a cyst may resolve on its own. When a cyst fails to resolve, it may need to be removed surgically, but that would depend upon its type and location. Cancer-related cysts are formed as a defense mechanism for the body following the development of mutations that lead to an uncontrolled cellular division. Once that mutation has occurred, the affected cells divide incessantly and become cancerous, forming a tumor. The body encapsulates those cells to try to prevent them from continuing their division and contain the tumor, which becomes known as a cyst. That said, the cancerous cells still may mutate further and gain the ability to form their own blood vessels, from which they receive nourishment before being contained. Once that happens, the capsule becomes useless, and the tumor may advance from benign to cancerous. Some cysts are neoplastic, and thus are called cystic tumors.