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Medical Studies/Studia Medyczne
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4/2016
vol. 32
 
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Case report

Conjunctival metastasis of a renal cell carcinoma in a 59-year-old man – clinicopathological case report

Ewa Dernoga
1
,
Iwona Rospond-Kubiak
1
,
Jarosław Kocięcki
1
,
Andrzej Marszałek
2

1.
Department of Ophthalmology, Poznan University of Medical Sciences, Poznan, Poland
2.
Department of Oncologic Pathology, Chair of Oncology, Poznan University of Medical Sciences, Poznan, Poland
Medical Studies/Studia Medyczne 2016; 32 (4): 291–293
Online publish date: 2016/12/28
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Introduction

Renal cell carcinoma (RCC) is a malignant kidney cancer that originates from the proximal or distal renal tubular epithelium. Renal cell carcinoma accounts for 2–3% of all adult malignant tumours, and men are generally affected two times more frequent than women [1]. It normally appears in the sixth decade of a patient’s life. Five-year survival for disseminated RCC is estimated at less than 10% [2]. The most common metastatic locations of RCC are lungs (76%), regional lymph nodes (66%), bones (42%), liver (41%), and brain (8%) [3, 4]. In Poland, about 2500 people die every year from disseminated RCC [5].
Ocular and orbital metastases from RCC are uncommon. In a detailed analysis of 227 metastatic tumours to the eye and orbit, Ferry and Font [6] recognised only seven lesions (3.5%) originating from the renal carcinoma.
In this report we would like to present the case of a 59-year-old man with conjunctival metastasis of RCC and a rapid growth rate.

Case report

A 59-year-old man presented to the Ocular Oncology Service in July 2012 with a right eye conjunctival tumour which he had recognised 1 week previously. The tumour was painless, occasionally bleeding, and growing fast. The patient had a history of right nephrectomy for RCC 2 weeks prior to developing any ophthalmolo-gical symptoms. Histopathological report identified RCC of mixed structure: partially sarcomatoid and partly clear cell (G4pT3b). At presentation, metastases to the central nervous system and left tonsil were also present.
On examination, the best-corrected visual acuity (BCVA) was 5/5 in the Snellen scale in the affected eye and 5/5 in the left eye, which was healthy. There was a conjunctival mass located in the right lower fornix protruding forward and involving the lower lid (Figure 1 A). The tumour was reddish in colour with blood clots on its surface measuring 16 mm × 6 mm × 10 mm. Fundoscopy of the right eye revealed no pathology. The working diagnosis of conjunctival metastasis was made and the tumour was excised urgently.
The histopathological and immunohistochemical evaluation following the surgery showed metastasis of the RCC with the expression of CD10+ and CAM5.2+ (Figures 1 B–D). The staining for CK7– was negative. The surgical margins were clear. Due to disseminated disease the patient was managed by the oncologist, who decided about palliative radiotherapy in July 2012. Despite the received treatment, the patient died in September 2012. During the follow-up period we did not notice any tumour recurrence.

Discussion

This is a clinicopathological case report of an exceedingly rare conjunctival metastasis of a renal cell carcinoma. The metastatic tumour was suspected at initial presentation because of the recent history of disseminated renal cancer and rapid growth rate. Histopathological and immunohistochemical tests following the surgery confirmed the initial diagnosis.
The differential diagnosis for this case would be: conjunctival angioma, squamous cell carcinoma, melanoma, oncocytoma, mucoepidermoid cancer, and Kaposi’s sarcoma. The other possible primary locations of the metastasising cancer could be: breast, lung, skin melanoma, larynx, stomach, urinary bladder, colon, and testicle [7]. All of these could be excluded on the basis of the histopathological report.
There are about 71 cases of eye and orbit metastases from kidney cancer reported in the literature. The involved structures were: orbit (36.8%), choroid (29.4%), iris (10.3%), ciliary body (5.9%), lacrimal gland (2.9%), conjunctiva (1.5%), eyelid (1.5%), and extraocular muscle (1.5%) [8]. The conjunctival metastases normally appear in the advanced stage of the disease.
Three cases of conjunctival metastases of RCC have been published so far. In two of them [9, 10] the intraocular structures were also involved and the patients presented with visual loss. The third one with conjunctival involvement had not experienced such a fast growth rate [11] as our patient. All described tumours occasionally bled, and this seems to be typical for RCC conjunctival metastasis [9–11].
In conclusion, conjunctival metastases from renal cell carcinoma are rare. The metastatic renal tumour can be suspected with a reddish colour of the mass and rapid growth rate. In any case, urgent excision of the tumour is required.

Conflict of interest

The authors declare no conflict of interest.

References

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2. Waalkes S, Schreder AJ, Kuczyk MA. Current treatment options for disseminated renal cell carcinoma. Eur Urol Suppl 2012; 11: 73-8.
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6. Ferry AP, Font RL. Carcinoma metastatic to the eye and orbit. I. A clinicopathologic study of 227 cases. Arch Ophthalmol 1974; 92: 276-86.
7. Kiratli H, Shields CL, Shields JA, DePotter P. Metastatic tumours to the conjunctiva: report of 10 cases. Br J Ophtalmol 1996; 80: 5-8.
8. Shome D, Honavar SG, Gupta P, Vemuganti GK, Reddy PV.Metastasis to the eye and orbit from renal cell carcinoma: a report of three cases and review of literature. Surv Ophthalmol 2007; 52: 213-23.
9. Ware GT, Haik BG, Morris WR. Renal cell carcinoma with involvement of iris and conjuctiva. Am J Ophtalmol 1999; 127: 460-1.
10. Rodney AJ, Gombos DS, Fuller GN, Pagliaro LC, Tannir NM. Choroidal and conjunctival metastases from renal cell carcinoma Am J Clin Oncol 2009; 32: 448-9.
11. Lapp T, Mittelviefhaus H, Werner M, Auw-Hadrich C. Severe bleeding eyelid after trivial trauma: conjuctival metastasis of a renal cel carcinoma. Graefes Arch Clin Exp Ophtalmol 2012; 250: 1705-6.

Address for correspondence:

Ewa Dernoga
Department of Ophthalmology
Poznan University of Medical Sciences
ul. Długa 1/2, 61-848, Poznań, Poland
Phone: +48 606 535 099
E-mail: edernoga@tlen.pl
Copyright: © 2016 Jan Kochanowski University in Kielce This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) License (http://creativecommons.org/licenses/by-nc-sa/4.0/), allowing third parties to copy and redistribute the material in any medium or format and to remix, transform, and build upon the material, provided the original work is properly cited and states its license.
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