Type:
Educational Exhibit
Keywords:
Head and neck, CT, MR, Education, Neoplasia
Authors:
P. Orellana, F. LAHSEN, A. Torres, A. Salas, M. López Ramírez, J. de Grazia, G. A. Miranda, R. Núñez Flores, L. Canales; SANTIAGO, REGION METROPOLITANA/CL
DOI:
10.26044/ecr2019/C-3507
Conclusion
Take Home Points:
- The solitary fibrous tumor is a non-aggressive lesion that is highly vascularized and the key to the differential diagnosis with more frequent lesions such as hemangioma or schwannoma is the “washout” enhancement pattern,
which differentiates it from both and also the progressive growth of the solitary fibrous tumor,
which differentiates it especially from hemangiomas.
- Nodular fasciitis is a lesion that could be considered in the differential diagnosis of a focal lesion of anterior compartment predominance,
with moderate to intense enhancement,
in a patient with painful proptosis.
The diagnostic confirmation is histological.
- In the case of Rosai-Dorfman disease,
the imaging findings are nonspecific and can mimic inflammatory-granulomatous pathologies or malignancy.
The diagnostic confirmation is histological.
- Rhabdomyosarcoma should be suspected in expansive lesions that occur in young patients.
The usefulness of MR images lies in assessing the extent of intracranial involvement and possible perineural involvement.
- In the presence of a mass of nonspecific characteristics and aggressive behavior,
one should suspect a metastasis and look for a primary tumor,
the main suspects being breast,
prostate,
melanoma and lung neoplasms.
Conclusion:
Although the definitive diagnosis of infrequent orbital masses lies in the histopathological and immunohistochemical study,
some particular imaging findings allow us to suggest their diagnosis.