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Sutures of the Skull

Sutures of the Skull

The human skull is composed of several bones that come together to protect the brain and support the structures of the face. The junctions where these bones meet are called sutures.
Sutures are immobile joints between adjacent bones of the skull. The narrow gap between the bones is filled with dense, fibrous connective tissue that unites the bones. The long sutures located between the skull bones are not straight but instead follow irregular, tightly twisting paths. These twisting lines tightly...

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Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery

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Chondrosarcoma Skull Base: A Case Report.

Jyotsna Naresh Bharti¹, Poonam Elhence¹, Suryanarayanan Bhaskar²

¹Department of Pathology, All India Institute of Medical Science, Jodhpur, Rajasthan, India.

Current Medical Imaging

|February 7, 2023

Summary

This summary is machine-generated.

This case report highlights a rare skull base chondrosarcoma, a challenging diagnosis in head and neck neoplasms. Immunoreactivity to Isocitrate dehydrogenase 1 (IDH1) aids in diagnosis.

Keywords:

Chondrosarcoma IDH chordoma neoplasm squash cytology the base of the skull

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Area of Science:

Oncology
Pathology
Neurosurgery

Background:

Chondrosarcomas are rare primary malignant bone tumors, infrequently occurring in the head and neck region.
Skull base neoplasms present diagnostic challenges, with chondrosarcoma being a rare differential diagnosis.
Isocitrate dehydrogenase (IDH) gene mutations are found in 50-60% of head and neck chondrosarcomas.

Observation:

A 37-year-old female presented with gait disturbance, initially suspected as trigeminal schwannoma.
Squash cytology revealed atypical chondrocytes, myxoid stroma, and pleomorphic cells with hyperchromatic nuclei.
Histopathology confirmed chondrosarcoma with cellular lobules in a myxoid background, without parenchymal invasion.

Findings:

The case demonstrates chondrosarcoma presenting as a skull base neoplasm.
Diagnostic ambiguity in squash cytology of skull base tumors is noted.
Chondrosarcomas exhibit immunoreactivity to IDH1.

Implications:

Awareness of chondrosarcoma as a rare differential diagnosis for skull base neoplasms is crucial.
IDH1 immunohistochemistry can assist in diagnosing chondrosarcoma from small biopsies.
Accurate diagnosis of skull base chondrosarcomas is essential for appropriate patient management.