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Pituicytomas and spindle cell oncocytomas: modern case series from the University of California, San Francisco

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Abstract

Purpose

Pituicytomas and spindle cell oncocytomas (SCOs) are extremely rare neoplasms of the sellar and suprasellar region that can often mimic pituitary adenomas. To date, there are relatively few cases of pituicytomas and SCOs reported; and most of these are small case series.

Methods

In this paper, we provide a retrospective review of the treatment, imaging characteristics, post-operative course, and histopathology of five cases of pituicytomas and two SCOs treated at the University of California, San Francisco (UCSF) over a 10-year period from 2003 to 2013.

Results

We find that pituicytomas and SCOs present similarly to pituitary adenomas, and look identical on CT or MR imaging. We histopathologically confirmed all pituicytomas with a combination of hematoxylin and eosin morphology and immunohistochemical positivity for vimentin and S100; SCOs stain for anti-mitochondrial antigen and endothelial membrane antigen. We observe positive thyroid transcription factor 1 (TTF1) immunohistochemistry in both cases of SCO, as well as in both of the cases of pituicytoma in which TTF1 staining was available.

Conclusions

This represents the largest single-institution case series of pituicytomas and SCOs to date, and also includes the first description of the management of a pregnant female with SCO. Our findings are consistent with the idea of common histogenesis for pituicytomas and SCOs, and also raise the possibility of more aggressive growth in SCOs as compared to pituicytomas.

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Conflict of interest

The authors declare that they have no conflict of interest, that this research was not sponsored by an organization, and that the authors have no financial relationship with any organization relevant to this research.

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Authors and Affiliations

  1. Department of Neurological Surgery, University of California at San Francisco, 505 Parnassus Avenue, Rm 779M, San Francisco, CA, 94143-0112, USA

    Corinna C. Zygourakis, John D. Rolston, Sandeep Kunwar & Manish K. Aghi

  2. Neuropathology Division, Department of Anatomic Pathology, University of California at San Francisco, San Francisco, CA, USA

    Han S. Lee

  3. Johns Hopkins University, Baltimore, MD, USA

    Carlene Partow

  4. Brain Tumor Research Center, University of California at San Francisco, 505 Parnassus Avenue, Rm 779M, San Francisco, CA, 94143-0112, USA

    Manish K. Aghi

  5. Center for Minimally Invasive Skull Base Surgery, University of California at San Francisco, 505 Parnassus Avenue, Rm 779M, San Francisco, CA, 94143-0112, USA

    Manish K. Aghi

  6. Maydan Family Endowed Faculty, University of California at San Francisco, 505 Parnassus Avenue, Rm 779M, San Francisco, CA, 94143-0112, USA

    Manish K. Aghi

Authors
  1. Corinna C. Zygourakis
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  2. John D. Rolston
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  3. Han S. Lee
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  4. Carlene Partow
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  5. Sandeep Kunwar
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  6. Manish K. Aghi
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Correspondence to Manish K. Aghi.

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Zygourakis, C.C., Rolston, J.D., Lee, H.S. et al. Pituicytomas and spindle cell oncocytomas: modern case series from the University of California, San Francisco. Pituitary 18, 150–158 (2015). https://doi.org/10.1007/s11102-014-0568-7

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  • DOI: https://doi.org/10.1007/s11102-014-0568-7

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