Discussion
Diagnosis With Brief Discussion
- Diagnosis
- Plombage (or paraffin plombage) with probable migration of the plombage material through the chest wall
- Radiologic Findings
- Chest PA shows a mass in the apex of the left hemithorax. The mass is of heterogeneous density, and is relatively lucent condering its large large. The cortical margin of the 3rd left rib is indistinct where it is projected upon the mass shadow.
Noncontrast scan through the upper thorax shows a large mass in the posterior chest wall causing expansion and erosion of the adjacent rib. The mass is largely of fat density, with small islands of soft tissue mixed with it. There are nodular calcifications along the inner surface of the mass. Contrast-enhanced scan shows no enhancing portions within the mass. The mass seems to have extended posteriorly (arrow) to form a thick layer of fatty tissue between the paraspinal and chest wall muscles, with nodular calcifications adjacent to the subscapularis muscle.
- Brief Review
- In the belief that collapsing the lung around the foci of tuberculous infection provided for anatomic healing of the lesions, physicians in the first half of the 20th century performed artificial extrapleural pneumothorax. If the patient tolerated artificial pneumothorax well, the surgeon injected or implanted plombe, a space-filling substance, during a second operation in order to compress the lung. Many substances were tried as substrate for plombe, and they included fat, gauze packing, oil, paraffin wax, bone, rubber bag, muscle, and synthetic materials, such as methylmacrylate spheres, fiberglass, polyethylene sheeting, and polystan sponge. There were complications resulting from collapse therapy including infection of the plombage space, blood vessel erosion, hemorrhage, and breach of the underlying parenchymal cavitation. It is said that paraffin wax, the material presumably used as plombe in this patient, were more prone to infection and extrusion, and thus was largely replaced by methylmacrylate, or lucite balls. With time, it became apparent that lucite also causes complications such as migration into adjacent structures and erosion of overlying ribs. Plombage thoracoplasty were also known to cause neoplastic complications to the chest wall, including epithelioid angiosarcoma, lung carcinoma, and non-Hodgkin's lymphoma. Performing extrapleural plombage for collapse therapy eventually fell out of favor as an optimal treatment for tuberculosis, largely due to introduction of antimicrobial therapy. It is reserved for patients with multi-drug resistance tuberculosis not eligible for surgical excision of infected lung tissue due to severe extension of disease or poor lung function.
- References
- 1. Mathews J, Vrablik MC, Paniagua MA.Plombage migration outside the thoracic cavity: a complication of tuberculosis treatment.
J Am Med Dir Assoc. 2009 Feb;10(2):138-40.
- Keywords
- Chest wall, Iatrogenic lung disease, Postoperative complication, Tuberculosis,