Kasis

Kasis refers to a type of benign cystic lesion that can occur in various parts of the body. The term is derived from the Greek word "kasis," meaning "box" or "case," alluding to the enclosed nature of the lesion. These cysts are typically filled with fluid or semi-solid material and are usually slow-growing.

Common locations for kasis include the skin, where they are often referred to as epidermal inclusion cysts or sebaceous cysts. These cutaneous kasis arise from hair follicles or skin glands and can vary in size. They are generally painless unless they become infected or inflamed. Other, less common locations can include internal organs, though these are often referred to by more specific terms related to the organ involved.

Diagnosis of a kasis is usually made through physical examination and medical history. In some cases, imaging techniques like ultrasound or MRI may be used to further assess the cyst. Treatment for a kasis is generally not required unless it causes discomfort, cosmetic concerns, or signs of infection. If treatment is desired, complete surgical excision is the most effective method to prevent recurrence. The removed tissue is typically sent for pathological examination to confirm the benign nature of the lesion.