Collision of Two Tumors: A Case Report of a Lung Adenocarcinoma With Metastasis to a Pituitary Adenoma

Marisa Khatijah Borhan; Florence Hui Sieng Tan; Nur Shazwaniza Awang Basry

doi:10.15605/jafes.037.02.09

Authors

Marisa Khatijah Borhan Hospital Umum Sarawak https://orcid.org/0000-0003-4053-0930
Florence Hui Sieng Tan
Nur Shazwaniza Awang Basry https://orcid.org/0000-0002-5656-8602

DOI:

https://doi.org/10.15605/jafes.037.02.09

Keywords:

collision tumor, pituitary adenoma, pituitary metastasis

Abstract

Acollision tumor involving metastasis to a pituitary adenoma is rare. We describe a case of a 68-year-old Bidayuh woman with underlying treatment-responsive lung adenocarcinoma, who presented with mass effect, panhypopituitarism and polyuria. Her initial imaging study reported pituitary macroadenoma, and she was treated with hormone replacement therapy. She then underwent transsphenoidal tumor debulking surgery with subsequent histopathological findings of a collision tumor of an adenocarcinoma with metastasis to a non-functioning pituitary adenoma.

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