Compressive Neuropathy of the Ulnar Nerve in the Hypothenar Region by Lipoma: Case Report
Arq. bras. neurocir; 39 (1), 2020
Publication year: 2020
Lipomas are well-defined tumors of the adipose tissue that often occur in the torso or the
extremities of adult patients. These tumors usually develop painlessly and insidiously, but
theymay compress adjacent structures. The objective of the present study is to describe the
case of a 68-year-old female patient with a giant lipoma located at the hypothenar region,
with manifestation of compression of the common palmar digital nerves, the ulnar nerve,
andthe abductormuscle of theVfinger. Regarding the symptoms, the patient feltmoderate
pain in the hypothenar region, with no Tinel sign, and no changes in the motor function or
sensibility of the digits innervated by the ulnar nerve. Lipomasmay present a varied range of
histological characteristics, and malignant tumors may be a differential diagnosis. An
imaging exammay aid in the diagnosis, which is confirmed by a histopathological study. For
the present case, as recommended in the literature, a surgical procedure was performed for
the resection of the tumor, which resulted in the control of the symptoms.