Rhodes Nicholas G, Murthy Naveen S, Lehman Julia S, Rubin David A
Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN, 55905, USA.
Departments of Dermatology and Pathology, Mayo Clinic, 200 First St SW, Rochester, MN, 55905, USA.
Skeletal Radiol. 2018 Nov;47(11):1553-1558. doi: 10.1007/s00256-018-2934-4. Epub 2018 Apr 9.
Pacinian corpuscles, the main touch receptors to pressure and vibration, are ubiquitous in the deep dermis and hypodermis of the fingers and palms. Nevertheless, their existence is largely unknown to most radiologists. We frequently noted hyperintense nodules in the palms of patients on water-sensitive MRI sequences, but were unable to explain their etiology. We recently encountered two patients who had Pacinian corpuscles identified at surgical exploration and pathological analysis. Pre-operative MRI examinations in these patients showed T2 hyperintense subcutaneous palmar nodules corresponding to these corpuscles in a pattern identical to those seen incidentally in other patients. Descriptions from the dermatopathological and orthopedic literature closely correspond to our MRI observations. Based on these data, we hypothesize that the MRI finding that we previously noted represents normal Pacinian corpuscles.
帕西尼小体是对压力和振动的主要触觉感受器，在手指和手掌的深层真皮和皮下组织中普遍存在。然而，大多数放射科医生对其存在情况知之甚少。我们在水敏感磁共振成像（MRI）序列上经常注意到患者手掌中有高信号结节，但无法解释其病因。我们最近遇到两名患者，在手术探查和病理分析中发现了帕西尼小体。这些患者术前的MRI检查显示，T2高信号的皮下手掌结节与这些小体相对应，其表现模式与在其他患者中偶然发现的结节相同。皮肤病理学和矫形外科学文献中的描述与我们的MRI观察结果密切相符。基于这些数据，我们推测我们之前注意到的MRI表现代表正常的帕西尼小体。
