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Case report


A case of metastatic rectal squamous cell carcinoma initially diagnosed as lung cancer.

Aung Zaw WinCarina Mari Aparici
Department of Radiology, San Francisco VA Medical Center, Department of Radiology, University California San Francisco (UCSF), San Francisco, California, USA
Date of Submission: 05-Jan-2015, Date of Acceptance: 12-Apr-2015, Date of Web Publication: 30-Apr-2015.
Corresponding Author:
Corresponding Author

Aung Zaw Win

Department of Radiology, San Francisco VA Medical Center, 4150 Clement Street, San Francisco, California ‑ 94121, USA.
E-mail: aungzwin@gmail.com

Corresponding Author:
Corresponding Author

Aung Zaw Win

Department of Radiology, San Francisco VA Medical Center, 4150 Clement Street, San Francisco, California ‑ 94121, USA.
E-mail: aungzwin@gmail.com

DOI: 10.4103/2156-7514.156125 Facebook Twitter Google Linkedin

ABSTRACT


Squamous cell carcinoma (SCC) of the rectum is extremely rare with a reported incidence of only 0.025-0.1% of all colorectal tumors. The patient was a 68-year-old man who presented with fatigue, dry cough, shortness of breath, and unintentional weight loss. A chest CT revealed a left suprahilar mass suspected to be lung cancer and an initial diagnosis of primary lung cancer was made. However, fluorodeoxyglucose positron emission tomography and computed tomography (FDG-PET/CT) exam revealed an intensely hypermetabolic rectal mass which turned out to be rectal squamous cell carcinoma. This is the first report that shows FDG-PET/CT images of rectal squamous cell carcinoma metastasis to the skin, muscle, bone, and lung. Use of PET/CT in the initial diagnosis of non-resectable rectal cancers may avoid unnecessary surgery.
Keywords: Bone, Fluorodeoxyglucose Positron Emission Tomography And Computed Tomography, Metastasis, Muscle, Rectal Squamous Cell Carcinoma, Skin Nodule

Cited in 1 Document

  1. Mia M. Noergaard, Inger M. H. Stamp and Uffe Bodtger (2016) Disseminated lung cancer presenting as a rectal mass. European Clinical Respiratory Journal 3(1):31726. doi: 10.3402/ecrj.v3.31726

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