Pseudocyst

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A pseudocyst is a pathological collection of fluid. A pseudocyst may appear to be a true cyst to the naked eye or on a CAT scan. However, it is technically not a cyst. The wall of a true cyst consists of a clearly defined epithelial cell layer. The wall of a pseudocyst consists of granulation and/or fibrous tissue (which is present secondary to inflammation).

A pancreatic pseudocyst results from the passage of inflammatory fluid into the omental bursa. This is typically a complication of acute pancreatitis, but may also occur following abdominal trauma.

v • d • e Pathology: Cancer, Tumors, Neoplasms, and oncology (C00-D48, 140-239) Benign tumors Hyperplasia - Cyst - Pseudocyst - Hamartoma - Benign tumor Malignant progression Dysplasia - Carcinoma in situ - Cancer - Metastasis Topography lip, oral cavity and pharynx: Oral - Head/Neck - Nasopharyngeal digestive system: tract (Esophagus, Stomach, Small intestine, Colon/rectum, Appendix, Anus) - glands (Liver, Bile duct, Gallbladder, Pancreas) respiratory system: Larynx - Lung bone, articular cartilage, skin, and connective tissue: Bone (Tailbone) - Skin - Blood urogenital: breast and female genital organs (Breast, Vulva, Vagina, Cervix, Uterus, Endometrium, Ovaries) - male genital organs (Penis, Prostate, Testicles) - urinary organs (Kidney, Bladder) nervous system: Eye (Uvea) - Brain (Choroid plexus) endocrine system: Thyroid (Papillary, Follicular, Medullary, Anaplastic) - Adrenal tumor (Adrenocortical carcinoma, Pheochromocytoma) - Pituitary Misc. Tumor suppressor genes/oncogenes - Staging/grading - Carcinogenesis - Carcinogen - Research - Paraneoplastic syndrome - List of oncology-related terms