Hemimetabolism or hemimetaboly , also called incomplete metamorphosis and paurometabolism ,  is the mode of development of certain insects that includes three distinct stages: the egg , nymph , and the adult stage, or imago. These groups go through gradual changes; there is no pupal stage. The nymph often has a thin exoskeleton and resembles the adult stage but lacks wings and functional reproductive organs. In aquatic entomology , different terminology is used when categorizing insects with incomplete metamorphosis.
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Adult development - Wikipedia
The type of treatment s your doctor recommends will depend on the stage of the cancer and on your overall health. This section sums up the options usually considered for each stage of kidney cancer. Stage I and II cancers are still contained in the kidney. These cancers are usually removed with surgery when possible. There are two common approaches:. If the cancer has grown into nearby veins as with some stage III cancers , your surgeon may need to cut open these veins to remove all of the cancer. This may require putting you on bypass a heart-lung machine , so that the heart can be stopped for a short time to remove the cancer from the large vein leading to the heart.
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There are many types of brain and spinal cord tumors. The tumors are formed by the abnormal growth of cells and may begin in different parts of the brain or spinal cord. Together, the brain and spinal cord make up the central nervous system CNS.
Two histologic types account for the majority of malignant esophageal neoplasms: adenocarcinoma and squamous cell carcinoma. Adenocarcinomas typically start in the lower esophagus and squamous cell carcinoma can develop throughout the esophagus. The epidemiology of these types varies markedly. Estimated new cases and deaths from esophageal cancer in the United States in [ 1 ]. The incidence of esophageal cancer has risen in recent decades, coinciding with a shift in histologic type and primary tumor location.