Post-aural Nodular Fasciitis

Abstract

Nodular fasciitis is a rare benign lesion. Here we report a case of post-auricular nodular fasciitis, which was misdiagnosed by fine-needle aspiration cytology (FNAC) as pleomorphic adenoma. An 18-year-old male presented at Al-Nahdha Hospital, physical examination revealed a right post aural firm immobile mass. Radiology suggested the presence of a hypo-dense to iso-dense subcutaneous mass. The swelling was excised and sent for histopathological examination which suggested the diagnosis of nodular fasciitis. FNAC reported pleomorphic adenoma of unusual location should raise the suspicion of nodular fasciitis.

Nodular fasciitis: A frequent diagnostic pitfall on fine‐needle aspiration

“…In addition to the above lesions, specific regional entities should be considered in the differential diagnosis depending on the location, including epithelioid sarcoma in the distal upper extremities, as well as a pleomorphic adenoma and myoepithelial neoplasms in the parotid gland …”

“…36 In addition to the above lesions, specific regional entities should be considered in the differential diagnosis depending on the location, including epithelioid sarcoma in the distal upper extremities, as well as a pleomorphic adenoma and myoepithelial neoplasms in the parotid gland. 13,37 Conclusions A specific FNA-based diagnosis of NF is challenging, and furthermore can be a very difficult diagnosis to definitively interpret as benign. Combining the clinical presentation and radiologic findings with the most commonly noted cytomorphologic features allows the diagnostic cytopathologist to appropriately triage the majority of cases, although uncertainty will remain in a significant number of cases.…”

Nodular fasciitis of the external auditory canal: Clinical case report and review of the literature

“…Radiologically, NF generally appears as a well-defined hypo or isoechoic lesion on ultrasound ( Lu et al., 2015 ). Fine needle punctures led in several cases to a wrong diagnosis of pleomorphic adenoma ( Mardi et al.,2005 ; Al-Rahbi et al., 2015 ; Jain et al., 2008 ). Computed tomography (CT) can show a heterogeneous lesion in case of cystic or mucoid transformation with sometimes even peripheral enhancement.…”

Lifethreatening tracheal obstruction in a child caused by nodular fasciitis: case presentation

“…NF prevalence is 13-20% in the head and neck area. The precise causes of the lesion are unclear at the time [2]. The research clearly shows that prior trauma is a critical etiological element, but it is not often depicted in studies.…”