ARRS 2022 Abstracts

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E2155. Small Palpable Masses in Face and Scalp
Authors
  1. Jeong Hyun Yoo; Mokdong Hospital
  2. Myung Jun Yi; Mokdong Hospital
Background
Superficial palpable masses are very common, and the causes and pathologies are variable. For the characterization and the differential diagnosis of the masses and adjacent soft tissue evaluation, ultrasound is a useful technique compared to CT – it is easy, inexpensive, and feasible.

Educational Goals / Teaching Points
The purpose of this study is to review the disease spectrum of small palpable masses of the face and scalp and to illustrate and learn many characteristic findings of lesions.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
Materials were retrospectively collected in the university hospital for recent 5 years using the PACS sorting system, and finally, cases were chosen among the all pathologic proven cases. Most cases were located face and scalp area. The exhibit includes cases of lipoma, dermoid, epidermoid, complicated or rupture of epidermoid, osteoma cutis, pilometricoma (calcifying epithelioma of Malherbe), trichilemmal cyst (pilar cyst), proliferating trichilemmal cyst, aola elastosis, palpable hard mass such as osteoma, calcified granuloma, fibrovascular tissue with calcification (calcinosis cutis), calcified foreign body, vascular mass and malformation (hemangioma, lymphatic malformation, venous lake [capillary aneurysm] with thrombosis), neurofibroma, schwannoma, malignant masses such as melanoma, lymphoma, skin cancer (SCC), inflammatory masses such as chronic inflammatory mass, acute suppurative and granulomatous inflammatory mass, fat necrosis, fibrofatty mass, lipogranulomatous inflammatory mass, chalazion, scleroderma, cosmetic foreign body injection related mass, foreign body granuloma (filler), cyst, granuloma, multiple injection droplet, inflammatory mass, abscess, trauma-related hematoma, superficial lymph node, and parotid mass.

Conclusion
Superficial palpable masses are very common, and the causes and pathologies are variable. Ultrasonography is useful for the evaluation of characteristic findings of superficial masses and for the differential diagnosis, compared to CT.