Castiglione Melina, Nardo Luciano, Ottaviani Francesco
Department of Clinical Sciences and Community Health, San Giuseppe Hospital, Università degli Studi di Milano, Milan, Italy.
Department of Otolaryngology - Head and Neck Surgery, San Giuseppe Hospital, Milan, Italy.
Head Neck. 2016 May;38(5):E108-10. doi: 10.1002/hed.24328. Epub 2016 Jan 23.
Hemangiopericytomas (HPCs) are soft tissue tumors with histological variability and unpredictable clinical and biological behavior. HPCs in the head and neck are uncommon, the growth pattern is nonspecific; thus, diagnosis is often made by exclusion.
A 43-year-old man complained of a short history of right ear pain associated with a growing mass in the right external auditory canal. Subsequent hearing loss in the right ear brought the patient to undergo a CT scan and an MRI. The relevant literature was also reviewed.
The imaging revealed a neoplasm arising from the floor of the right external auditory canal. The neoplasm was removed with the diagnosis of HPC.
The literature reports few cases of HPC of the external auditory canal. Their rarity in this area leads to difficulties in diagnosis. Morphology is not predictive of their behavior, so close follow-up is mandatory for their correct management.
血管外皮细胞瘤（HPCs）是一种软组织肿瘤，具有组织学变异性以及不可预测的临床和生物学行为。头颈部的HPCs并不常见，其生长模式不具有特异性；因此，诊断往往通过排除法做出。
一名43岁男性主诉右耳疼痛病史较短，伴有右外耳道肿物生长。随后右耳听力丧失促使患者接受CT扫描和MRI检查。同时对相关文献进行了回顾。
影像学检查显示肿瘤起源于右外耳道底部。该肿瘤被切除，诊断为HPC。
文献报道的外耳道HPC病例较少。它们在该区域的罕见性导致诊断困难。形态学并不能预测其行为，因此密切随访对于正确管理至关重要。
