Related Experiment Video
Updated: Jan 28, 2026
03:10
Microscopic Cyst Resection for the Treatment of Patients Diagnosed with Epididymal Cyst
Published on: March 31, 2023
11.9K
Unusual Calcification in Intramedullary Epidermoid Cyst
Mohit Agrawal1, Surya Sri Krishna Gour1, Sachin Anil Borkar1
1Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India.
World Neurosurgery
|February 25, 2019
Summary
This study reports a rare case of calcified intraspinal epidermoid tumors. Surgical removal of this unusual spinal lesion resulted in a positive patient outcome.
Area of Science:
- Neurosurgery
- Spinal Surgery
- Neuropathology
Background:
- Intraspinal epidermoid tumors are uncommon neurological conditions.
- Calcification within these tumors presents unique diagnostic and surgical challenges.
- Understanding the pathogenesis and surgical implications is crucial for patient management.
Observation:
- A 32-year-old female experienced progressive spastic paraparesis and incontinence.
- Imaging revealed an unusual intraspinal epidermoid cyst with intralesional calcification.
- The lesion was surgically excised.
Findings:
- This is the first reported case of a spinal intramedullary epidermoid cyst with intralesional calcification.
- Complete surgical removal was achieved.
- The patient experienced no new neurological deficits post-operatively.
Implications:
- Highlights the importance of recognizing rare intraspinal pathologies.
- Demonstrates successful surgical management of calcified spinal epidermoids.
- Contributes to the understanding of spinal epidermoid cyst variations.
Related Concept Videos
01:16Unusual Results
3.8K
Unusual results are those that have a very low chance of occurring. Unusual results can be identified using probabilities and the range rule of thumb. In problems involving probability, unusual results can be observed in 2 instances – an unusually high number of successes or an unusually low number of successes.
According to the range rule of thumb, any value above or below two standard deviations, 2σ from the mean, μ is considered unusual.
Maximum unusual value =...
According to the range rule of thumb, any value above or below two standard deviations, 2σ from the mean, μ is considered unusual.
Maximum unusual value =...
3.8K
01:07z Scores and Unusual Values
11.0K
The z score is one of the three measures of relative standing. It describes the location of a value in a dataset relative to the mean. z scores are obtained after the standardization of the values in a dataset. The z score for the mean is 0.
This score indicates how far a value is from the mean in terms of standard deviation. For example, if a data value has a z score of +1, the researcher can infer that the particular data value is one standard deviation above the mean. If another data...
This score indicates how far a value is from the mean in terms of standard deviation. For example, if a data value has a z score of +1, the researcher can infer that the particular data value is one standard deviation above the mean. If another data...
11.0K
02:18Network Covalent Solids
16.1K
Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
16.1K
03:26Electron Configuration of Multielectron Atoms
64.9K
The alkali metal sodium (atomic number 11) has one more electron than the neon atom. This electron must go into the lowest-energy subshell available, the 3s orbital, giving a 1s22s22p63s1 configuration. The electrons occupying the outermost shell orbital(s) (highest value of n) are called valence electrons, and those occupying the inner shell orbitals are called core electrons. Since the core electron shells correspond to noble gas electron configurations, we can abbreviate electron...
64.9K
01:51Lampbrush Chromosomes
8.7K
In 1882, Flemming observed lampbrush chromosomes (LBC) in salamander eggs. Later in 1892, Rückert observed LBCs in shark egg cells and coined the term "lampbrush chromosomes" because they looked like brushes used to clean kerosene lamps.
LBCs are made up of two pairs of conjugating homologous chromatids. Each chromatid consists of alternatively positioned regions of condensed-inactive chromatin and loosely placed-active side loops, which can be contracted and extended. The loops...
LBCs are made up of two pairs of conjugating homologous chromatids. Each chromatid consists of alternatively positioned regions of condensed-inactive chromatin and loosely placed-active side loops, which can be contracted and extended. The loops...
8.7K
03:06Alkali Metals
24.5K
Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals
Table 1: Properties of the alkali metals
24.5K