Solitary massive lipoma in the planter aspect of great toe presenting as two masses

Olaoye, Iyiade; Adesina,

doi:10.1177/2050313x17730265

Cited by 1 publication

(1 citation statement)

References 11 publications

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“…2 Several reported cases in the literature describe lesions in the foot and ankle. [8][9][10][11][12][13][14][15] In our practice, we have noticed that subcutaneous fat along the medial plantar margin of the midfoot between the abductor hallucis and flexor digitorum brevis muscles often has a pattern resembling a discrete lipoma. In some cases, well-defined fat containing regions with this appearance, in the setting of symptoms, has led to surgical intervention.…”

Section: Introductionmentioning

confidence: 99%

Mass-Like Fat at the Medial Midfoot: A Common Pseudolesion

Strickland

Patten

Durst

et al. 2021

Indian J Radiol Imaging

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Background Fatty masses are common and may be encountered in the foot and ankle. In some cases, normal subcutaneous fat may be mistaken for a discrete mass. Aims The aim of this study was to evaluate the common finding of prominent subcutaneous fat at the medial midfoot resembling a lipoma and to determine the prevalence of this pseudolesion by applying a series of potential size cutoff criteria. Materials and Methods Three musculoskeletal radiologists retrospectively evaluated 91 sequentially performed magnetic resonance imaging examinations of the ankle to measure fat resembling a discrete lipoma at the medial midfoot. Each blinded reader measured the largest area of continuous subcutaneous fat in orthogonal axial, coronal craniocaudal, and coronal transverse dimensions. Patient age, sex, and study indications were also recorded. Statistical analysis was performed with R and SAS 9.4 software Results A discrete fatty pseudolesion as defined by measuring at least 1 cm in all planes by measurements of at least two of three readers was present in 87% of cases (79 of 91). When a size criterion of 1.5 cm was used, a pseudolesion was documented in 14% of cases (13 of 91). There was a significant correlation between larger pseudolesion size and female sex in the axial plane; however, there was no correlation in the coronal craniocaudal and coronal transverse dimensions. Conclusions Subcutaneous fat at the medial midfoot often has a mass-like appearance that could be mistaken for a lipoma. It is important to recognize this pseudolesion variant and not to confuse the imaging appearance for a discrete mass.

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