Author: Andrew Parker, MD
Andrew Parker, MD
Dr. Andrew Parker is a board-certified internal medicine physician with over 10 years of clinical experience. He earned his medical degree from the University of California, San Francisco (UCSF), and has worked at leading hospitals including St. Mary’s Medical Center. Dr. Parker specializes in patient education and digital health communication. He now focuses on creating clear, accessible, and evidence-based medical content for the public.
Lung Tumor: Causes, Symptoms, and Treatment A lung tumor is the formation of abnormal masses in the lungs, caused by uncontrolled cell growth or failure of cells to die as they should. Lung tumors can be benign (non-cancerous) or malignant (cancerous). Overview of Lung Tumors What is a lung tumor? A lung tumor refers to the development of abnormal growths in the lungs, which may be benign or malignant. Benign lung tumors Benign lung tumors are relatively rare. Although considered “non-cancerous,” the term benign is relative, since these tumors may still cause health issues. They typically grow slowly, and in…
Endometrial Cancer: Symptoms, Causes, and Treatment Options The uterus is a hollow, pear-shaped organ that plays a vital role in supporting and nurturing a developing fetus during pregnancy. The endometrium is the inner lining of the uterus, which thickens and sheds during the menstrual cycle or undergoes changes during pregnancy. In this article, we will explore what endometrial cancer is, its causes, symptoms, and treatment options. What is Endometrial Cancer? Endometrial cancer (also called endometrial carcinoma) begins in the cells of the lining inside the uterus, known as the endometrium. It is the most common type of uterine cancer. This…
What is Medulloblastoma? Causes, Symptoms, and Treatment Medulloblastoma is a type of malignant brain tumor that begins in the lower part of the brain called the cerebellum. The cerebellum controls balance and coordinated movement. This condition is more common in children than in adults. Early diagnosis and timely treatment are essential to help prevent serious complications. Understanding Medulloblastoma What is Medulloblastoma? Medulloblastoma is a fast-growing malignant brain tumor that starts in the cerebellum. From there, it can spread to other parts of the brain and spinal cord through the cerebrospinal fluid (CSF). Although it can occur at any age, medulloblastoma…
Ependymoma: Causes, Symptoms, and Treatment Ependymoma is a rare tumor that develops in the brain or spinal cord. Although it can occur at any age, it is most commonly diagnosed in children. Early detection and timely treatment are crucial to prevent life-threatening complications. Overview of Ependymoma Ependymoma is a type of tumor that arises from the ependymal cells lining the ventricles of the brain and the central canal of the spinal cord. These tumors generally grow slowly and tend not to spread to distant organs. However, in more aggressive cases, the tumor may expand rapidly and metastasize. While children are…
Non-Hodgkin Lymphoma: Symptoms, Causes, and What You Should Know Non-Hodgkin lymphoma (NHL) is a type of cancer that originates in the lymphatic system, primarily in the lymph nodes. It occurs when abnormal lymphocytes (a type of white blood cell) grow uncontrollably, forming tumors that may spread to other organs. Thanks to advances in modern medicine, both diagnosis and treatment outcomes for NHL have significantly improved, giving patients better chances of recovery. What Is Non-Hodgkin Lymphoma? Non-Hodgkin lymphoma, sometimes called non-Hodgkin’s disease or simply NHL, refers to a group of cancers that affect the lymphatic system, which is part of the…
Retinoblastoma: Causes, Symptoms, and Treatment Options Retinoblastoma is a rare but serious type of eye cancer that develops in the retina, most often affecting children under the age of 5. Although uncommon, it is the most frequent primary malignant eye tumor in children, accounting for about 3% of all pediatric cancers. The good news is that with early diagnosis and proper treatment, the survival rate can reach up to 95%, and in many cases, vision can also be preserved. Early recognition of symptoms is key, as timely intervention significantly improves treatment outcomes. What is Retinoblastoma? Retinoblastoma is a malignant tumor…
Spinal Tumors: Causes, Symptoms, and Treatment Spinal tumors can develop in any part of the spine, including the vertebrae, spinal cord, and surrounding tissues. There are several types of spinal tumors, and not all of them are malignant. Most spinal tumors originate from cancers that have metastasized from other parts of the body. Overview of Spinal Tumors What is a spinal tumor? A spinal tumor is an abnormal growth of cells inside or around the spinal canal. Spinal tumors can be classified based on their location as follows: Intramedullary tumors – within the spinal cord Intradural-extramedullary tumors – within the…
What Is Neurofibromatosis? Causes, Symptoms, and Treatment Neurofibromatosis (NF) is a rare genetic disorder of the nervous system that causes tumors to develop on nerves. These growths can occur anywhere in the brain, spinal cord, or peripheral nerves. Depending on the type and severity of the condition, treatment may involve surgical removal of tumors, radiation therapy, or medication to manage symptoms. Overview of Neurofibromatosis What is Neurofibromatosis? Neurofibromatosis is a group of inherited disorders that lead to the growth of tumors along nerves in the body. Most of these tumors are benign (noncancerous), but in some cases they can become…
What is liposarcoma? Causes, symptoms, and treatment Liposarcoma is a rare type of cancer that develops in fat tissue. These tumors can form anywhere in the body, but most often appear in the arms, abdomen, thighs, or behind the knees. Overview What Is Liposarcoma? Liposarcoma is an uncommon malignant tumor that originates in fat cells. It usually develops in the abdomen or in the muscles of the arms and legs, but it can occur in any area of fat tissue. This disease mainly affects middle-aged and older adults, typically between ages 50 and 65. Many liposarcomas are low-grade and grow…
Ductal Carcinoma In Situ (DCIS): What You Need to Know What is Ductal Carcinoma In Situ? Ductal carcinoma in situ (DCIS) is considered the earliest stage of breast cancer. In DCIS, abnormal cells line the milk ducts of one or both breasts but remain contained within the ducts, without spreading beyond the basement membrane. Because it has not invaded nearby tissues, DCIS is classified as a non-invasive breast cancer. If these abnormal cells break through the duct wall, the condition progresses to invasive breast cancer. For this reason, DCIS is often described as a warning sign or precursor of invasive…