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Indian Journal of Medical and Paediatric Oncology
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IMAGES IN ONCOLOGY
Year : 2013  |  Volume : 34  |  Issue : 2  |  Page : 128-129  

Stomach metastasis of breast carcinoma mimicking primary gastric neoplasm on fluorodeoxy glucose-positron emission tomography-computed tomography


1 Department of Nuclear Medicine and PET CT, Jaslok Hospital and Research Centre, Mumbai, Maharashtra, India
2 Department of Oncology, Jaslok Hospital and Research Centre, Mumbai, Maharashtra, India
3 Department of Histopathology and Electron Microscopy, Jaslok Hospital and Research Centre, Mumbai, Maharashtra, India
4 Department of Radiodiagnosis, Jaslok Hospital and Research Centre, Mumbai, Maharashtra, India

Date of Web Publication6-Aug-2013

Correspondence Address:
Prathamesh Joshi
Department of Nuclear Medicine and PET CT, Jaslok Hospital and Research Centre, Worli, Mumbai, Maharashtra
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0971-5851.116217

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  Abstract 

We present fluorodeoxy glucose positron emission tomography-computed tomography (FDG-PET/CT) findings in a case of breast carcinoma. The PET/CT findings in this case were suspicious of second primary neoplasm in the stomach. However, on endoscopic biopsy, the lesion was found to be stomach metastasis of breast carcinoma with estrogen receptor positivity. Stomach is a rare site of breast carcinoma metastasis. Our case suggests that it is difficult to distinguish a stomach metastasis of breast cancer from a primary gastric cancer on the basis of clinical and imaging features. However, this differential diagnosis must be kept in mind and it is important to make such distinction because of its implications on patient management.

Keywords: Breast carcinoma, estrogen receptor positive, fluorodeoxy glucose positron emission tomography-computed tomography, stomach metastasis, second primary neoplasm


How to cite this article:
Joshi P, Lele V, Jain R, Khubchandani S, Sinhasan S. Stomach metastasis of breast carcinoma mimicking primary gastric neoplasm on fluorodeoxy glucose-positron emission tomography-computed tomography. Indian J Med Paediatr Oncol 2013;34:128-9

How to cite this URL:
Joshi P, Lele V, Jain R, Khubchandani S, Sinhasan S. Stomach metastasis of breast carcinoma mimicking primary gastric neoplasm on fluorodeoxy glucose-positron emission tomography-computed tomography. Indian J Med Paediatr Oncol [serial online] 2013 [cited 2019 Jun 15];34:128-9. Available from: http://www.ijmpo.org/text.asp?2013/34/2/128/116217


  Case Report Top


We present fluorodeoxy glucose positron emission tomography-computed tomography (FDG-PET/CT) findings in a 53-year-old woman, a case of ductal breast carcinoma, post-modified radical mastectomy status. Six years after surgery, she was found to have skeletal metastases and PET/CT was performed to evaluate baseline pre-chemotherapy disease status. PET/CT, along with skeletal metastases, revealed a hypermetabolic stomach thickening [Figure 1], which was reported as a possible primary gastric neoplasm. The patient had no abdominal symptoms. Endoscopic biopsy of this lesion demonstrated presence of breast carcinoma metastasis with estrogen receptor positivity [Figure 2]. Stomach metastasis of breast carcinoma is very rare. [1],[2],[3] Our case suggests that it is difficult to distinguish a stomach metastasis of breast cancer from a primary gastric cancer on the basis of clinical and imaging features. However, this differential diagnosis must be kept in mind, and it is important to make such distinction because of its implications on patient management.

Photomicrograph of the pathology slides (A) shows ductal carcinoma of the breast. The neoplastic cells marked with arrows in B and C demonstrate positive staining for cytokeratin-7 (CK-7) and estrogen receptors (ER), respectively. Final diagnosis of stomach metastasis of breast carcinoma was made and the patient was started on hormonal therapy.
Figure 1: The PET/CT (a) showed increased FDG uptake in D3 vertebra (black arrow) and right iliac bone (black arrowhead), consistent with bone metastases. Non-specific tracer retention seen in right pelvicalyceal system is non-specific (red arrow). Focal FDG uptake (SUVmax = 4.6) was seen in stomach (b, arrow), which on CT and fused PET/CT localized to enhancing thickening along the lesser curvature of stomach extending 3 cm (c,d, arrows). These findings were suspicious of primary gastric neoplasm. Endoscopy revealed elevated lesion along lesser curvature of the stomach (e, arrow)

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Figure 2: On histopathology, along with results of immunohistochemistry tests, the biopsied lesion was found to be metastasis of carcinoma breast, with strong expression of estrogen receptors. Photomicrograph of the pathology slides (a) shows ductal carcinoma of the breast. The neoplastic cells marked with arrows in b and c demonstrate positive staining for cytokeratin-7 (CK-7) and estrogen receptors (ER), respectively. Final diagnosis of stomach metastasis of breast carcinoma was made and the patient was started on hormonal therapy

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  References Top

1.Kanthan R, Sharanowski K, Senger J, Fesser J, Chibbar R, Kanthan SC. Uncommon mucosal metastases to the stomach. World J Surg Oncol 2009;7:62.  Back to cited text no. 1
    
2.Tohfe M, Shami P, Aftimos G, Saade M. Gastrointestinal metastases from breast cancer: A case report. South Med J 2003;96:624-5.  Back to cited text no. 2
    
3.Taal BG, Peterse H, Boot H. Clinical presentation, endoscopic features, and treatment of gastric metastases from breast carcinoma. Cancer 2000;89:2214-21.  Back to cited text no. 3
    


    Figures

  [Figure 1], [Figure 2]



 

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