Hemangiopericytoma of the Parapharyngeal Space

Hemangiopericytoma of the Parapharyngeal Space: A Diagnostic Challenge

“…MRI is essential for scheduling the surgical plan and should be considered the ‘gold standard' for the study of this tumor. Nevertheless, imaging is not specific and has no pathognomonic findings [2,5,7,8]. Fine-needle-aspiration cytology or biopsy is not advised in this type of tumor due to the high risk of bleeding [7].…”

“…It is important to clarify that in our patient, the initial suspicion was a pleomorphic adenoma of a minor salivary gland. For preoperative differential diagnosis, a conventional angiography may be considered as well as if embolization is part of the plan [2,5,7]. …”

Haemangiopericytoma of the maxillary gingiva: report of a case

“…A proliferation index of 10% or greater, as measured with MIB‐1, may be indicative of a more aggressive subset of this neoplasm (Kowalski & Paulino 2001). HPCs of the head and neck are believed to behave more favourably compared with their counterparts in other anatomic sites (Walike & Bailey 1971, Llorente et al 1999, Enzinger & Weiss 2001). Recurrence rate has been reported to be as high as 57% (Barnes 2001).…”

“…Initially described by Stout (1942), HPC is a soft tissue tumour derived from mesenchymal cells with pericytic differentiation (Llorente et al 1999, Enzinger & Weiss 2001, Alabdulhadi et al 2004). These pericytes have uniform, ovoid nuclei with indistinct cell borders and are located outside the reticulin sheath of the endothelium.…”

Does it take a village to write a case report?

“…The case report criteria should be applied to all cases published in the Journal, regardless of the country of origin of the article. International case reports published in the Journal do not meet the same word count and restriction of figures and references (eg, Llorente et al 5 ).…”