Tumor

In dermatology, a "tumor" simply means a large solid mass in the skin that is bigger than 2 centimeters (about the size of a walnut or larger). The word "tumor" can sound frightening, but in medical terminology it just describes size - many tumors are completely benign (non-cancerous), like large lipomas (fatty lumps). These masses can grow from various tissue types including fat, nerve, or connective tissue.

Dermatological tumors appear as:

• Large masses greater than 2 cm (walnut-sized or larger)
• Shape: Usually round or oval, sometimes lobulated (bumpy surface)
• Depth: Can be superficial (raising the skin) or deep (felt more than seen)
• Color: Skin-colored, pink, red, purple, or brown
• Consistency: Soft and doughy (lipomas), firm, or hard
• Surface: Skin may be stretched, shiny, or show visible blood vessels
• Mobility: Some move freely, others are fixed to deeper structures

Tumors can develop anywhere but common sites include:

• Trunk and back: Large lipomas, neurofibromas
• Arms and legs: Soft tissue tumors, large cysts
• Shoulders and neck: Lipomas commonly grow here
• Abdomen: Various benign and malignant tumors
• Head and scalp: Less common location for large tumors
• Any location: Growth depends on tissue of origin

Tumors may be accompanied by:

• Slow growth over months to years (benign tumors)
• Rapid growth over weeks (concerning for malignancy)
• Pain or tenderness if pressing on nerves
• Skin stretching or thinning over the mass
• Visible veins over the surface
• Interference with movement if near joints
• Multiple similar tumors (genetic syndromes)
• Constitutional symptoms (weight loss, fever) with malignant tumors

Seek immediate medical evaluation for:

• Any new mass larger than 2 cm
• Rapidly growing tumors
• Hard, fixed masses
• Tumors with skin ulceration or bleeding
• Multiple new tumors appearing
• Associated symptoms like weight loss or night sweats
• Pain or functional impairment
• Any concerning changes in existing tumors