POSTER SECTIONS Coverpage Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References

ECR 2024 / C-17448

Navigating the Labyrinth of Central Skull Base Lesions: A Pictorial Essay

Congress:

ECR 2024

Poster Number:

C-17448

Type:

Educational Exhibit

Keywords:

Head and neck, Musculoskeletal bone, CT, MR, Biopsy, Cancer, Congenital, Haematologic diseases

Authors:

F. Atak, Y. YARAŞIR, A. Karaosmanoğlu

DOI:

10.26044/ecr2024/C-17448

DOI-Link:

https://dx.doi.org/10.26044/ecr2024/C-17448

Learning objectives

- Exploring central skull base anatomy- Describing key imaging features and strategies for differentiating central skull base lesions

Background

The central skull base, marking the boundary between the intracranial and extracranial regions, can be affected by intrinsic lesions originating from the skull base or neighboring structures above and below. Because clinical assessment is limited, cross-sectional imaging has become crucial for diagnosing, planning treatment, and monitoring patients with skull base lesions.

Findings and procedure details

1- Anatomy of central skull baseKnowledge of skull base anatomy is required for correct imaging diagnosis and for accurate delineation of lesions (Figure 1).2- Pathologies of central skull base Metastasis (Figure 2) Origin and location: The lung, breast, prostate, and kidney are the most common primaries to metastasize to the skull base Clinical aspect: Metastasis is the most common neoplasm affecting the skull base in an adult patient. Imaging features: Osteolytic metastasis typically forms a destructive mass centered in the bone with no sclerotic rim...

Conclusion

Central skull base lesions may exhibit typical imaging findings in expected locations, but variations can occur. Therefore, enhancing diagnostic accuracy for skull base lesions requires understanding clinical issues and being aware of imaging feature variations. Some imaging findings and clinical information may help us to reach the correct diagnosis (Table 1 and Table 2).

Personal information and conflict of interest

F. Atak: Nothing to disclose Y. Yaraşir: Nothing to disclose A. Karaosmanoğlu: Nothing to disclose

References

See Table 3.

Fig 1

Fig 2: A 50-year-old female patient with known breast cancer has nodular bone lesions...

Fig 3: A 56-year-old man with tinnitus has been diagnosed with a left spheno-cavernous...

Fig 4: A 30-year-old male patient was diagnosed with a clival chordoma presenting with...

Fig 5: A 77-year-old female with hoarseness. The CT scan shows a lytic lesion in the...

Fig 6: A 70-year-old woman presented to the emergency department following dysphasia....

Fig 7: A 10-year-old boy presented with a loss of vision. Axial CT image shows a...

Fig 8: A 65-year-old man with a history of diabetes mellitus presented with persistent...

Fig 9: A 34-year-old male patient with right-sided visual loss who was diagnosed with...

Fig 10: CT images of two different patients, a 29-year-old and a 52-year-old, show...

Fig 11: A 65-year-old male patient presents with ear fullness. The axial T2-weighted...

Fig 12: A 33-year-old female with left-sided facial numbness. Permeative lesions in the...

Fig 13: A 3-year-old girl presented with swelling and redness of the left eye, which...

Fig 14: A 27-year-old female patient presenting with CN3 palsy. The axial CT image...

Fig 15: MRI in a 64-year-old woman with vertigo shows a small retroclival cystic lesion...

Fig 16: A 9-year-old patient presented with a swollen left eye. A CT scan shows an...

Fig 17: 39-year-old female patient with left-sided nasal obstruction. CT shows an...

Fig 18: 10-year-old boy with ossifying fibroma in the right maxillary sinus. Follow-up...

Fig 19: 41-year-old patient with a history of adenoid cystic carcinoma. The CT scan...

Fig 20: 7-year-old male patient with strabismus. The CT scan shows a large skull base...

Fig 21: A 17-year-old male patient with headache. CT scan shows a lytic lesion with...

Fig 22: A 52-year-old man presented with right-sided otalgia. MRI shows a right...

Fig 23: A 15-month-old girl presented with a swelling in her head. Sagittal MR images...

Fig 24: A 9-year-old girl with left-sided facial paralysis. There is a necrotic mass...

Fig 25: 60-year-old male patient with a history of colorectal cancer, presented with...

Fig 26: 55-year old female patient presenting with headache. Axial brain CT scan shows...

Table 1

Table 2

Table 3