Presenter

Abdelhakim Khellaf

Authors

Romain Cayrol1, Abdelhakim Khellaf1, André Lamettti2, 3, Marie-Christine Guiot2, 3, 4, Jason Karamchandani2, 3, 4, José Ferreira5

1Division of Pathology, Department of Clinical Laboratory Medicine, Centre Hospitalier de l’Université de Montréal, Montreal, Quebec, Canada and Department of Pathology and Cell Biology, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada

2Division of Pathology, Department of Clinical Laboratory Medicine, McGill University Health Center, Quebec, Canada

3Department of Pathology, Faculty of Medicine, McGill University, Montreal, Quebec, Canada

4Department Neurology and Neurosurgery, Faculty of Medicine, McGill University, Montreal, Quebec, Canada

5Division of Pathology, Department of Clinical Laboratory Medicine, Hoptial Maisonneuve-Rosemont, Montreal, Quebec, Canada and Department of Pathology and Cell Biology, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada

Clinical Summary

The patient is a 54 year old male who presents with a 2.5 cm metabolic lung nodule. His past medical history is significant for a dural tumor resected in another center (2019). The lung nodule was resected and in the context of the prior medical history the neuropathology service was consulted.

Discussion points

  1. What is the differential diagnosis on histology?
  2. What additional studies are indicated?
Reveal Diagnosis

Pulmonary metastasis of an intracranial mesenchymal tumour with FET:CREB fusion

Additional relevant investigations and comment.
Histologic mimic with a chordoid meningioma.
Molecular studies necessary for the diagnosis.

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