Search results
Results from the WOW.Com Content Network
Pilocytic astrocytoma (and its variant pilomyxoid astrocytoma) is a brain tumor that occurs most commonly in children and young adults (in the first 20 years of life). They usually arise in the cerebellum, near the brainstem, in the hypothalamic region, or the optic chiasm, but they may occur in any area where astrocytes are present, including the cerebral hemispheres and the spinal cord.
The Szondi test is a 1935 nonverbal projective personality test developed by Léopold Szondi. [1] [2] He theorized people's decisions are determined by genetically coded preferences ("drives") that untimately shape their entire life ("fate"/"destiny"), and these unconscious preferences can be uncovered through the subject's attraction to photographs of similar individuals.
Meningioma seen at autopsy, as a tumor of the dura mater extending into the cranial cavity, and can be detached from the bone along with the rest of the dura mater. Small tumors (e.g., < 2.0 cm) usually are incidental findings at autopsy without having caused symptoms. Larger tumors may cause symptoms, depending on the size and location.
A nervous system tumor is a tumor that arises within the nervous system, either the central nervous system (CNS) or the peripheral nervous system (PNS). [1] [2] Nervous system primary tumors include various types of brain tumor and spinal tumors, such as gliomas, and meningiomas (of the CNS), and schwannomas (of the PNS) and can be either benign or malignant.
The prognosis is worst for these grade 4 gliomas. Few patients survive beyond 3 years. Individuals with grade 4 astrocytoma have a median survival time of 17 [6] weeks without treatment, 30 [6] weeks with radiation, and 37 [6] weeks with surgical removal of most of the tumor followed by radiation therapy. Long-term survival (at least five years ...
The upper tumor is a benign tumor that is non-invasive. Benign tumors are usually round in shape and encapsulated by fibrous connective tissue. The lower picture depicts a malignant tumor. It is irregularly shaped, vascular, and it is invasive, crossing the basement membrane.
Depending on the size, number, and location of the tumor, clinical manifestation could vary from no symptoms to feeding difficulty and rarely airway obstruction. Clinically, congenital epulis can grossly present as smooth-surfaced lobular or ovoid, sessile or pedunculated, red or pink nodule with a size ranging from several millimeters up to 7. ...
Medulloblastoma is the second-most frequent brain tumor in children after pilocytic astrocytoma [37] and the most common malignant brain tumor in children, comprising 14.5% of newly diagnosed brain tumors. [38] In adults, medulloblastoma is rare, comprising fewer than 2% of CNS malignancies. [39]