lavage
Prolapse is the term meaning dropping of an organ.
The medical term for appendages or accessory structures of an organ is "adnexa".
Agenesis is the medical term meaning absent development of an organ or tissue. Atresia is the medical term meaning congenital absence or development of a tube.
Hypertrophy
Organ failure
PARENCHYMA
The outer section of an organ can be called its cortex.
AdnexaAdnexaAdnexa
Mediatstinal is a medical term meaning related to the mediastinum. The Mediastinum is the space between the lungs.
Sinus lavage is the medical term meaning washing of nasal sinuses. Sinus lavage may be performed for therapeutic or diagnostic reasons.
Stroma is the medical term meaning the connective tissue that provides the framework for an organ. It's counterpart is parenchyma, which means the main mass of the organ.
The medical term for the defective development or congenital absence of an organ or tissue is "agenesis."