aksillaarisilmu

Aksillaarisilmu, also known as axillary os or accessory axillary bone, is a rare anatomical variant characterized by the presence of a small, ossified nodule or bone fragment within the axilla, or armpit region. This condition is typically asymptomatic and often discovered incidentally during medical imaging, such as X-rays or mammograms, performed for other reasons. The precise embryological origin of aksillaarisilmu is not fully understood, but it is thought to arise from aberrant ossification or a remnant of a developmental structure.

While most cases are benign and require no treatment, it is important for clinicians to be aware of this entity to avoid misinterpretation as a fracture, tumor, or other pathology. In rare instances, if the aksillaarisilmu causes discomfort or impingement symptoms, surgical excision might be considered. However, this is uncommon. The term itself is derived from "aksillaarinen" (axillary) and "silmu" (bud or nodule), reflecting its location and appearance. There is no established genetic predisposition, and it is generally considered an isolated developmental anomaly.