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Electron J Gen Med 2019 ;16(6 ):em 181ISSN:2516-3507
OPEN ACCESS Case Report https://doi.org/10.29333/ejgm/115858
1 Medical Oncologist, Department of Medical Oncology, Hiwa Cancer Hospital, Sulaymaniyah, Kurdistan Region, Iraq . 2 Histopathologist, Department of Pathology Lab, Hiwa Cancer Hospital,
Sulaymaniyah, Kurdistan Region, Iraq .
3 Radiologist, Department of Radiology, Hiwa Cancer Hospital, Sulaymaniyah,
Kurdistan Region, Iraq .
4 MSPH, BPH, Research Department, General Directorate of Health, Sulaimani, Iraq . 5 PhD, MSC, HDCM, BPH, & DCM, Department of family & Community Medicine,
Col lage of Medicine, University of Sulaimani. Sulaimani, Iraq .
Received: 29 Jun 201 9, Accepted: 25 Nov 201 9
Correspondence: Sara Jamil Nidhamalddin Medical Oncologist, Department of Medical Oncology, Hiwa Cancer Hospital, Sulaymaniyah, Kurdistan Region, Iraq . E- mail: [email protected]
© 2019 by the authors; licensee Modestum Ltd., UK. This article is an open access article distributed under the terms and conditions
of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/4.0/).
Electronic Journal of General Medicine
Breast cancer metastasis from Gastric Carcinoma in a
young female
Sara Jamil Nidhamalddin
1, Hemin Abdulwahab Hassan 2, Kalthum Ali 3, Khalid Anwar Hama G hareeb 4,
Mohammed Ibrahim Mohialdeen Gubari
5
ABSTRACT
Gastric cancer is a disease of elderly patients and mainly metastasis to liver, lung, and peritoneum, while signet ring cell is a variant of gastric cancer
and commonly metastasis to peritoneum and lymph nodes. Metastasis to mammary is a rare condition which account for 3% and has poor prognosis.
Generally extra mammary carcinoma precedes breast metastasis by 2 years. It ’s uncommon to have breast metastasis as a first manifestation of extra
mammary malignancies. There is no age limit and presentation my mimic primary breast cancer. Due to rarity of this condition there are no consensuses
about clinical, radiological and histological features which make it a challenging task to distinguish primary from metastatic breast neoplasm. The case
bellow is a young woman with di agnoses of diffuse -signet ring cell gastric cancer. First presentation was right breast edema with ascites, peritoneal
nodules, and enlarged enhancing ovaries on imaging. Biopsy from each site confirmed involvement by metastatic adenocarcinoma with signet ring
pattern. Her condition progressed after 5th cycle of EOX.
Keywords: Gastric cancer, breast metastasis, young age
INTRODUCTION
Gastric cancer at young ages is rare. The median age at diagnosis is 71 years and is the second most common cause
of death worldwide (1).
Incidence of signet ring cell gastric cancer ranges from 3.4% in Japan to 39% in western countries (2,3) and accounts
for 29% of gastric cancers, it occurs most commonly in women and mainly younger age groups, it is less chemo -sensitive
with poor prognosis than intestinal type (4,5). Diffuse -signet ring cell type exhibits very little cell cohesion with
predilection for extensive sub-mucosal spread and early metastasis (6), diffuse form ’s main carcinogenic event is loss of
E- cadherin expression through mutation of CDH1 gen (7).
Carcinoma of stomach can spread by local extension, hematogenous spread, lymphatic dissemination or seeding of
peritoneal surface, wide spread metastasis may involve any organ, especially liver, lung and peritoneum (6, 8,9), while
signet ring cell subtype ’s main metastatic sites are peritoneum and lymph nodes rather than liver (10).
Metastatic lesions to the breast from extra -mammary neoplastic lesions are unusual with poor prognosis. The most
common reported sources are malignant melanomas, lymphoma/leukemia group, contralateral breast carcinoma, lung
carcinoma and carcinoid tumors (11,12). There is no consensus on a distinct clinical and radiologic presentation (12,13).
Although diagnosis of primary malignancy usually precedes detection of the breast lesion in some cases may have no
history of malignancy (13). Nidhamalddin et al. / Breast cancer metastasis from Gastric Carcinoma in a young female
2 / 7 http://www.ejgm.co.uk
CASE PRESENTATION
A 32- year -old married lactating woman, mother of 3 children presented to breast clinic with a rapid painless diffuse
swelling of right breast over few weeks, not associated with redness, she had also mild diffuse abdominal pain but good
appetite no vomiting no weight loss or change in bowel habit. Her review of systems was otherwise negative, no family
history of cancer.
At breast clinic ultrasound and mammography of breast was taken the ultrasound of right breast revealed large size,
hard, moderately heterogeneous tissue texture, multiple well defined hypo -echo ic cystic lesions, largest one is 14*9mm
at 10 o’clock with multiple duct dilatation and periductal thickening. In right axilla inflammatory lymph node of 13*5mm
was detected, cortex of 3mm, echogenic hilum was detected, normal left breast and left axilla.
Mammography CC and MLO view was taken, breast composition ACR 4, a single superficial well defined dense lesion
at superior -lateral aspect was seen, normal left breast, clear both axillae ( F ig ure 1 ). Core biopsy from the mass was taken,
histopathology reported metastatic mucin secreting adenocarcinoma (F ig ure 2 ). IHC was as follow ( ER negative, PR
negative, HER2 negative, KI 67: 60%, E- cadherin positive, CA125 negative, WT1 negative, mammaglobin negative, CDX2
positive, moderate nuclear staining ( Fig ure 3 ).
Figure 1: Mammography
Figure 2: Breast tissue histology Electron J Gen Med 2019;16(6):em181
http://www.ejgm.co.uk 3 / 7
Abdominal and pelvis ascites,diffuse infiltration of the peritoneum with omental cake as well as stranding of pelvic
fat, enlarged and enhanced right and left ovary, diffuse gastric wall thickening were visualized on Dynamic staging
computed tomography (CT)scan of chest, abdomen and pelvis.
Tumor markers were as follows CEA: 1.2 ng/ml, AFP: 2.23 Iu/ml, CA 19.9: 0.62 u/ml, CA 125: 62.6 u/ml, CA 15.3: 19.7
u/ml.
Gastroenteroscopy was performed, easily bleeding ulcers was seen over great curvature from mid body till antrum
( F ig ure 4 ), histopathology of gastric lesion reported poorly differentiated adenocarcinoma diffuse signet ring type
( F ig ure 5 ), IHC results was positive for AE1/AE3 and negative HER2 status.
With collaboration of our oncologist, pathologist, radiologist we diagnosed and managed our case as signet ring cell
gastric cancer, and she was started on EOX (EPIrubicin 50mg/m
2, OXALIplatin 130mg/m 2, Capecitabin 625mg/m 2), on
fifth cycle there was progression on image study, and unfortunately we lost her after 2 weeks.
ER PR CK
Figure 3: Breast tissue histology
Figure 4: Gastric endoscopy Nidhamalddin et al. / Breast cancer metastasis from Gastric Carcinoma in a young female
4 / 7 http://www.ejgm.co.uk
DISCUSSION
Breast cancer accounts for the most common malignancies, but metastasis to breast from extra mammary
malignancies is a rare condition and comprising around 3% of breast malignancies, the majority are from contralateral
breast, less than 0.5% resulted from extra mammary sites (14). In 25% of cases breast involvement is bilateral (15).
Prognosis is poor, according to reported cases overall survival ranged from 12 day to 18 month (16).
Around 400 cases have been reported to have breast metastasis from extra -mammary sides, their incidence ranged
from 1.7% -6.6%, 1.2% -2%, 2.7% in (autopsy, clinical, and cytological reports) (17), and the most common source from
highest to lowest rate were from melanom a, lung, ovary, prostate, kidney, stomach, ileum, thyroid, cervix, squamous cell
carcinoma of the tongue and floor of the mouth, fibrosarcoma of the nasal septum and pancreatic adenocarcinoma.
With our case another 38 case have been reported so far to have metastatic disease from stomach, 22 of them had
histological feature of signet ring cell carcinoma (16).
Unlike our case that had synchronous multiple metastasis at presentation, breast metastases appears on the average
1.9 - 2.0 years after discovery of the primary lesion (12,13,18), and usually signifies disseminated metastatic gastric tumor
( 15, 19), while in some cases there may be no history of neoplasm (14). The age at diagnosis ranges from 22 -70 years
(mean 46 years; median 46.5 years) (16, 20,21). Breast metastasis from gastric carcinoma mainly occurs in female (95%)
than male (5%), Georgiannos et al . (14) attributed the reason behind this phenomena to differences in size and vascuarity
between two gender ’s breast, hormonal factors, endothelial cell adhesion molecule, angiogenic factors, immunologic
determinants, hormone receptor, or other cellular components also may play a role since they are expressed differently
in male and female breast.
Secondary involvement of breast occurs mainly in elderly patients while lung and gastric cancer particularly signet
ring cell variant of stomach develop in younger age group and anticipate more aggressive nature (22,23).
Clinical manifestations are quite similar to primary breast cancer which make suspicion of elsewhere primaries unusual
but essential to avoid; unnecessary radical operation and providing optimal treatment, reported cases in literatures had
different presentation, from inflammatory breast cancer (18,24,25) to painful/painless lumps and often occur in upper
outer quadrant with presence of axillary lymphadenopathy (12,13).
Radiological findings are not specific which makes the diagnosis quit difficult, they may present as a solitary or
multiple lesi ons, well demarcated or poorly marginated masses, diffuse hypoechoic lesions, diffuse involvement of skin
or parenchyma or both (12,20), and some time there is no any radiologic findings (26,27). Kawak et al . reported that for
those with clinical feature suggesting inflammatory breast carcinoma after confirmation of signet ring cell breast
carcinomas has been made, metastatic signet ring carcinomas should be considered if there is no micro -calcification or
masses on radiographic findings ( 13, 18). But metastasis from ovarian carcinoma may demonstrate microcalcification with
psammoma bodies (28,29).
Pathologically it ’s hard to differentiate between primary breast cancer and metastasis, breast cancer can have
ambiguous histological feature that can be easily mistaken for extra mammary cancers. (14) Some histologic feature my
help in recognizing secondary from primary like absence of elastosis which is found in primary and indicating a slow
Figure 5: Histopathology of gastric tissue sample Electron J Gen Med 2019;16(6):em181
http://www.ejgm.co.uk 5 / 7
growth and rarely found in secondary tumors (30). A sharp transition at the border of the tumor my give clue for
metastasis (31). Tumors in subcutaneous rather than parenchymal or breast tissue and absence of in situ component
support extra mammary origin (14) .
Tumor metastasize to breast by unexplained pathway, this intriguing situation have been attributed to estrogen and
high blood supply of breast in premenopausal women (32,33).
Unlike our case in most of the reported cases breast metastasis from gastric cancer has happened in left breast
although there is no consistent explanation but Lee et al, (19) reported that this laterality may suggest presence of a
lymphatic pathway or higher incidence of breast invasion from stomach via left supraclavicular lymph node .
With our case another 5 cases have been reported to have breast and ovarian metastasis, it is uncommon to have
invasion of hormonal – dependant organs especially in premenopausal women (26).
Immunohistichemistry of breast metastasis from stomach are usually positive for CK7, CEA, and GATA3 but negative
for GCDFP -15(gross cystic disease fluid protein -15), ER, PR, and CK20. (34,35) What supported our case to have breast
metastasis from gastric cancer was having positive CDX2, CK7 and negative CK20, ER, PR, CA12 5, WT1, Mammaglobin,
HER2 status.
IHC can differentiate metastatic signet ring cell carcinoma from primary signet ring cell carcinoma of breast, the latter
one is a variant of invasive lobular carcinoma of breast and account for 14% of breast cancer (36), its incidence is
increasing among postmenopausal women and have aggressive nature with tendency for early metastasis to abdomen
and GIT tract, on IHC they demonstrate positive ER, PR and GCDFP (34,37).
CONCLUSION
Breast metastasis from extra -mammary sites is uncommon with poor prognosis; clinical presentation might be quit
misleading to primary breast cancer. Confirmation through clinical presentation, clinical history, histopathology,
Immunohistichemistry and radiological examinations is crucial to ensure the appropriate therapy and avoiding
unnecessary surgical treatment .
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