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Case Reports
. 2017 Nov;99(8):e230-e232.
doi: 10.1308/rcsann.2017.0153. Epub 2017 Sep 15.

A case of massive porocarcinoma

T Boam  1 , A Szczap  2 , T Mendes da Costa  3 , N Khirwadkar  4 , L Tho  5 , J Gollogly  5
Affiliations
Case Reports

A case of massive porocarcinoma

T Boam et al. Ann R Coll Surg Engl. 2017 Nov.

Abstract

A 53-year-old Cambodian woman presented with nodular masses on the right arm suggestive of a sarcoma-type malignancy. The masses were excised and identified as multiple benign eccrine poromas. The patient re-presented after two years with large relapsed tumours and axillary lymph node involvement. A forequarter amputation was undertaken. Histology confirmed the diagnosis of a porocarcinoma, which was likely to be due to malignant transformation of the original poromas. The size and multiplicity of the tumours represents a highly unusual presentation of these rare eccrine neoplasms.

Keywords: Eccrine; Porocarcinoma; Poroma; Sarcoma.

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Figures

Figure 1
Figure 1
Initial presentation of tumours
Figure 2
Figure 2
Presentation after relapse
Figure 3
Figure 3
Histology of relapsed tumour (20x magnification) showing rounded monomorphic cells typical of a classical poroma displaying bland cytology. It is notable that the overall morphology is atypical in this case owing to a lack of mitoses and paucity of duct formation.
Figure 4
Figure 4
Histology (4x magnification) showing ulcerated tumour with invasion of the dermis and epidermal attachment
See this image and copyright information in PMC

References

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