What is moth-eaten appearance?

Moth-eaten appearance is a pattern of bone involvement by multiple lytic lesions that is described as permeative bone destruction (permeative process in bone).

What is Permeative bone destruction?

Permeative bone destruction is seen when the bony alterations are characterized by multiple tiny holes that become smaller and fewer in number near the periphery of the lesion; as a result, there is a wide transition zone from abnormal to normal bone.

What is a Permeative pattern?

The permeative pattern indicates an aggressive bone lesion with rapid growth potential. The lesion is poorly demarcated and not easily separated from the surrounding normal bone. In fact, it may imperceptibly merge with uninvolved osseous segments and create a zone of transition that is very long.

What is mottling to bones?

[os″te-o-poi″kĭ-lo´sis] a mottled condition of bones, apparent radiographically, due to the presence of multiple sclerotic foci and scattered stippling.

What is moth-eaten alopecia?

The “moth-eaten” pattern is the most common type and is considered to be a pathognomonic manifestation of secondary syphilis. The alopecia, which is nonscarring, can occasionally affect hair-bearing areas other than the scalp.

What is soap bubble appearance?

Soap bubble appearance describes: A multi-loculated bubbly appearance. In bone refers to : an expansile lytic lesion with internal trabeculations and preserved cortex, usually of benign nature. May be used to describe more aggressive lesions.

What is expansile lytic lesion?

Expansile lytic bone lesions without cortical destruction can result from various benign and malignant neoplastic pathologies, causes include 1: unicameral bone cyst. aneurysmal bone cyst (eccentric) enchondroma. chondromyxoid fibroma (eccentric)

What causes mottled bones?

General Discussion. Osteopetrosis is marked by increased bone density due to a defect in bone reabsorption by cells called osteoclasts. This leads to accumulation of bone with defective architecture, making them brittle and susceptible to fracture. In some cases, this is also accompanied by skeletal abnormalities.

What is bone sclerosis?

Bone sclerosis is defined as “an abnormal increase in density and hardening of bone” according to Biology online. In our clinical practice, sclerotic bone lesions are relatively common to be found on plain radiographs or CT scans.

What is moth-eaten hair?

moth-·eat·en al·o·pe·ci·a patchy hair loss of parietal and occipital regions of the scalp, characteristic of secondary syphilis.