Ossifying fasciitis at an extraordinary site – a case report and analysis of diagnostic pitfalls

Łukasz Kowalczyk; Marcin Braun; Bartłomiej Tomasik; Dominika Piasecka; Dominika Michno; Jacek Fijuth; Dorota Jesionek-Kupnicka; Radzisław Kordek

doi:10.5114/wo.2019.85884

eISSN: 1897-4309
ISSN: 1428-2526

Contemporary Oncology/Współczesna Onkologia

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2/2019
vol. 23

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abstract:

Case report

Ossifying fasciitis at an extraordinary site – a case report and analysis of diagnostic pitfalls

Łukasz Kowalczyk

¹

,

Marcin Braun

¹

,

Bartłomiej Tomasik

²

,

Dominika Piasecka

¹

,

Dominika Michno

¹

,

Jacek Fijuth

³

,

Dorota Jesionek-Kupnicka

¹

,

Radzisław Kordek

¹

Department of Pathology, Chair of Oncology, Medical University of Lodz, Poland

Department of Biostatistics and Translational Medicine, Medical University of Lodz, Poland

Department of Radiotherapy, Chair of Oncology, Medical University of Lodz, Poland

Contemp Oncol (Pozn) 2019; 23 (2): 121-125

DOI: https://doi.org/10.5114/wo.2019.85884

Online publish date: 2019/06/13

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Ossifying fasciitis is a very rare disease of reactive character; however, it can mimic malignant lesions, especially osteosarcoma. We report a case of a 30-year-old woman, who experienced a rapidly growing painful lesion of the left knee joint, preceded by a trauma. The tumor was resected, and the histopathological image suggested a malignant lesion with features of an osteosarcoma. A detailed correlation with a clinicopathological and radiological analysis led to the final diagnosis of ossifying fasciitis at an extraordinary site of patellar retinaculum. Our case shows that the close similarity between ossifying fasciitis and osteosarcoma may be challenging.

keywords:

Ossifying fasciitis at an extraordinary site – a case report and analysis of diagnostic pitfalls

Łukasz Kowalczyk 1 , Marcin Braun 1 , Bartłomiej Tomasik 2 , Dominika Piasecka 1 , Dominika Michno 1 , Jacek Fijuth 3 , Dorota Jesionek-Kupnicka 1 , Radzisław Kordek 1

fasciitis ossificans, ossifying fasciitis, osteosarcoma, knee, patellar retinaculum

Łukasz Kowalczyk

¹

,

Marcin Braun

¹

,

Bartłomiej Tomasik

²

,

Dominika Piasecka

¹

,

Dominika Michno

¹

,

Jacek Fijuth

³

,

Dorota Jesionek-Kupnicka

¹

,

Radzisław Kordek

¹