A Sheep in Wolf’s Clothing: Lobular Pyogenic Granuloma Masquerading Nodular Amelanotic Melanoma

  • Jacqueline Schönlebe Institute of Pathology "Georg Schmorl", Städtisches Klinikum Dresden, Academic Teaching Hospital, Dresden, Germany
  • Uwe Wollina Department of Dermatology and Allergology, Städtisches Klinikum Dresden, Academic Teaching Hospital, Dresden, Germany
Keywords: Amelanotic melanoma, Pyogenic granuloma, Histology, Treatment


BACKGROUND: Tumor masquerading is a common phenomenon seen in clinical dermatology. While amelanotic melanoma is known to simulate pyogenic granuloma, a benign vascular tumour, the contrary has been reported exceptionally scarce.

CASE PRESENTATION: We present a 52-year-old woman with a slow-growing lesion on her right flank, which developed over 12 months. On examination, we observed a large exophytic, easily bleeding tumour on the right flank, that resembled amelanotic malignant melanoma. Histologic analysis after complete excision of the lesion confirmed a pyogenic granuloma of the lobular capillary hemangioma subtype. In the present case masquerading of the lesion went to the better site after histologic investigations despite the delay of diagnosis caused by the patients.

CONCLUSION: Nevertheless, the diagnosis of uncertain lesions needs a rapid histologic analysis to gain the best possible prognosis for the patient.


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How to Cite
Schönlebe J, Wollina U. A Sheep in Wolf’s Clothing: Lobular Pyogenic Granuloma Masquerading Nodular Amelanotic Melanoma. Open Access Maced J Med Sci [Internet]. 2019Aug.30 [cited 2021Jan.18];7(18):3015-7. Available from: https://www.id-press.eu/mjms/article/view/oamjms.2019.417

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