Adenolipoma

Adenolipoma of thyroid -- very high mag

Adenolipoma is a rare type of lipoma, which is a benign tumor composed of adipose (fat) tissue. Adenolipomas are distinguished from typical lipomas by the presence of glandular structures within the fatty tissue. These glandular elements are often eccrine sweat glands, making adenolipomas a unique subset of adnexal tumors of the skin. Adenolipomas most commonly occur in the skin but can also be found in other locations where fat and glandular tissues coexist.

Characteristics

Adenolipomas are typically slow-growing, painless masses. They are most often found in adults and can occur anywhere on the body but have a predilection for the trunk and limbs. The presence of sweat glands within the fatty mass is a hallmark of adenolipomas, distinguishing them from other lipomatous tumors.

Diagnosis

The diagnosis of adenolipoma is primarily based on histological examination. Imaging techniques such as ultrasound or magnetic resonance imaging (MRI) can be used to assess the size and extent of the tumor, but definitive diagnosis requires a biopsy. Histologically, adenolipomas show mature adipose tissue interspersed with eccrine sweat glands.

Treatment

Treatment of adenolipoma typically involves surgical excision. Complete removal of the tumor is usually curative, with a low risk of recurrence. Since adenolipomas are benign, they do not metastasize, but their removal may be recommended if they cause discomfort, cosmetic concerns, or restrict movement depending on their location.

Epidemiology

Adenolipomas are rare, and the exact incidence is not well-documented. They can occur in individuals of any age but are most commonly diagnosed in adults.

Conclusion

Adenolipomas represent a unique intersection of adipose and glandular tissue pathology. While they are benign and often asymptomatic, their removal may be necessary for diagnostic confirmation, symptom relief, or cosmetic reasons. Ongoing research into the pathogenesis of adenolipomas may provide further insights into their development and the relationship between adipose and glandular tissues.