Cancer-Related Dictionary

A partial response refers to a situation where a patient experiences a regression of a disease or its symptoms but not to the extent of a complete eradication. It is commonly used in healthcare, particularly in cancer treatment, where it indicates a significant decrease in tumor size or disease markers but not their total disappearance.

A pathologist is a medical professional specializing in studying diseases and their causes, effects, and processes. They perform laboratory tests on patient samples, interpret the results to aid in diagnosis, and consult with other physicians to ensure appropriate treatment plans. Their expertise is vital in detecting serious conditions like cancer and infections. They also contribute to health maintenance by evaluating screening tests.

Pediatric oncology is a medical specialty focused on the diagnosis and treatment of cancers occurring in children and adolescents. This branch combines various treatments like chemotherapy, radiation therapy, surgery and stem cell transplantation, along with research on cancer biology and genetics. The aim is to effectively treat and ideally achieve remission, while reducing potential side effects and improving the quality of life for young patients.

Perineural invasion refers to a pathological process where cancer cells invade the spaces surrounding nerves. Typically detected under a microscope during tissue exams, this process often indicates aggressive cancer and can lead to increased risk of recurrence post-treatment. It's commonly observed in various cancers like prostate, head & neck, colorectal, among others.

A placebo is a harmless, inactive substance or treatment given to a patient, often used in clinical trials as a control group. It's designed to resemble actual medication in appearance and administration, without therapeutic effects. Its aim is to measure the impact of belief on health outcomes and to isolate the efficacy of the actual treatment under consideration.

Plasmacytoma refers to a malignant tumor formed by abnormal plasma cells, which are a type of white blood cells responsible for producing antibodies. These tumors often occur in the bone marrow and soft tissues. Although they are generally observed as isolated lesions, their occurrence could be an early sign of multiple myeloma, a cancer of plasma cells.

A "platelet count" is a lab test that measures the number of platelets, which are small blood cells that help in blood clotting, in a person's blood. It is used to diagnose diseases and monitor treatment effectiveness. Low or high platelet counts can indicate a medical condition that requires treatment.

Platelets, also known as thrombocytes, are small, colorless cell fragments in our blood that form clots and stop or prevent bleeding. These essential components of the blood are produced in the bone marrow and serve a crucial role in blood coagulation, wound healing, and inflammation response.###

A polyp is a small, abnormal growth of tissue that develops on the lining of a body part, such as the cervix, colon, or nasal passage. Typically benign (non-cancerous), polyps can sometimes become malignant (cancerous). Their size, number, and location can influence the treatment approach.

"Precancerous" refers to cells that have abnormal changes and might transform into cancer over time, but are not yet cancerous themselves. This term is often used to describe conditions that significantly increase the risk of cancer, such as certain types of skin lesions or polyps in the colon. However, not all precancerous conditions will necessarily develop into cancer.

"Preclinical" refers to the phase of research conducted before a new drug or treatment is tested on humans. This stage involves laboratory experiments using cell cultures and animal testing to determine the efficacy, potential side effects, and optimal dosage. It is a fundamental step in drug development and policy-making in healthcare.

A primary tumor is the original growth of cancer cells that initially forms in the body. It is typically the first indication or onset of cancer within a specific organ or tissue. The primary tumor can metastasize, spreading to different body parts, resulting in secondary tumors. Treatments often target the primary tumor first to stop further spread of cancer.

Prognosis refers to the likely course or outcome of a disease, condition, or patient's recovery based on the general outlook of the identified condition. It provides estimates about chances of recovery, disease progression, and survival rates based on factors such as patient's health, type of disease and treatment.

Prognostic factors are specific characteristics that help predict the likely outcome or course of a disease in a patient. These factors can include age, stage of disease, and specific biological markers, and they assist healthcare providers in determining the best treatment approach.

Progression-Free Survival (PFS) is a medical term used in oncology to denote the length of time during and after treatment, a patient lives with a disease that does not worsen. It's an essential measure in assessing the efficacy of new cancer treatment drugs or methodologies.

Prolactin is a hormone produced by the pituitary gland, primarily responsible for stimulating milk production after childbirth. Also, it plays a role in fertility by inhibiting follicle-stimulating hormone (FSH) and gonadotropin-releasing hormone (GnRH). Elevated levels can cause reproductive problems in both men and women.

Protein biomarkers are specific proteins found in the body that can be measured and used to indicate a biological state, such as the presence of a disease or condition. They help in diagnosing diseases, predicting disease progression, and monitoring treatment responses.