Chondroid lipoma mimicking pleomorphic adenoma on cytology

Chondroid lipoma: multimodality imaging in a 9-year-old female

Chondroid lipomas are rare, benign lipomatous tumors that occur most frequently in adults during the fourth decade of life. While a female predominance was observed in the initial series of 20 cases described in 1993, the subsequent 49 reported cases do not support a strong gender predilection. We report a case of a chondroid lipoma presenting in a 9-year-old female as a painless, enlarging, left gluteal mass. This is the second case to be reported in the first decade of life and the fourth pediatric case reported in the literature (age < 21). We review the imaging and pathology findings as well as present a comprehensive review of the current literature.

Characteristics of chondroid lipoma: A case report and literature review

RATIONALE

Chondroid lipoma (CL) is a rare benign tumor. No relevant epidemiological reports have been published on CL, and there is a lack of uniform diagnostic and treatment criteria for the tumor.

PATIENT CONCERNS

Here, we report a case of CL with a mass on the left buttock for 2 weeks, and further illuminate its diagnosis and treatment.

DIAGNOSIS

The diagnosis of CL was rendered according to the pathological indices.

INTERVENTIONS

The tumor was resected completely under spinal anesthesia.

OUTCOMES

The patient was followed-up for 6 months and showed no tumor recurrence or metastasis and there was resolution of the patient's lower-limb numbness and pain.

LESSONS

The case study presented here provides evidence that CL could be effectively diagnosed by using ultrasound, puncture or biopsy, and/or magnetic resonance imaging. Furthermore, the patient recovered without any complications after completely resecting the tumor.