Chest Wall Tumors Flashcards
Primary malignant chest wall tumors
- Chondrosarcomas (35%)
- Plasmacytoma (25%)
- Ewing’s sarcoma (15%)
- Osteosarcoma (15%)
- Lymphoma (10%)
Tumors that metastasize to chest wall
- Melanoma
- Breast carcinoma
- Lung carcinoma
- Mesothelioma
- Renal cell carcinoma
Benign tumors of the chest wall
- Fibrous dysplasia (40%)
- Chondoroma (30%)
- Osteochondroma
- Desmoids
- Lipoma
- Neurofibroma
- Giant cell tumor
*Characterized by slow growth
Most common presentation of chest wall tumors
Painful, enlarging lesions (80%)
20% assymptomatic
*May also present with dyspnea, night sweats, fevers, generalized malaise
Imaging modalities used for diagnosis (and staging)
- Diagnosis: chest CT or MRI
- Staging: PET/CT
Diagnostic algorithm for chest wall tumors
- Imaging/Staging:
- Chest CT or MRI
- PET/CT
- Tissue diagnosis:
- determine histopathology
- determine candidate for neoadjuvant therapy
- Options:
- core needle biopsy
- incisional biopsy
- excisional biopsy (< 5cm)
Most common primary malignant chest wall tumor
Chrondrosarcoma
Most common location of chrondrosarcoma
Costochondral arches (80%)
Costochondral junction (sternum 20%)
CXR appearance of chrondrosarcoma
lobulated mass (medullary portion of the rib or sternum)

Treatment for chondrosarcoma
Treatment therefore should be wide local excision with wide margins for malignant lesions. Adjuvant therapy is rarely indicated because these tumors are resistant to chemotherapy and RT.
Prevalence of plasmacytoma
(a.k.a solitary plasma cell tumor myeloma)
Accounts for 20-30% of primary malignant chest wall tumors
Most common location of plasmacytoma
Ribs and sternum
Primary malignant chest wall tumor associated with progression to multiple myeloma
Plasmacytoma
Presentation of plasmacytoma
Painful mass with osteolytic CXR appearance
TOC for plasmacytoma
Treatment id definitive XRT
- Surgical resection (wide resection) for refractory cases
- Chemotherapy used for disease progression
Most common chest wall malignancy in children
Ewing’s sarcoma
- Aggressive, destructive tumors that invade and displace adjacent structures
Cell of origin of Ewing’s sarcoma
neural crest cells
Most common presentation of Ewing’s sarcoma
Painful mass with fever and malaise
- May have elevated WBC and ESR
CXR appearance of Ewing’s sarcoma
Lytic lesion with surrounding destruction and onion peel appearance (new bone formation)
Treatment of choice for Ewing’s sarcoma?
Treatment is wide excision of the lesion. The entire rib is removed along with the adjacent rib above and below the tumor.
This is followed by adjuvant RT.
Chemotherapy is used for patients with systemic disease and has been shown to improve survival.
Most common location of osteosarcoma
Ribs, scapula, clavicle (young adults)
Unique featurs of osteosarcoma of the chest wall compared to osteosarcoma of the extremity
More prone to recurrence and metastasis
MC presentation of osteosarcoma
Painful mass with elevated ALP
CXR appearance of osteosarcoma
Sunburst pattern with elevation of periosteum (Codman’s triangle) due to new bone formation
Prognosis for osteosarcoma determined by
response to chemotherapy
Role of XRT for osteosarcoma
None to minimal (usually ineffective)
Codman’s triangle
Osteosarcoma
Elevation of periosteum due to new bone formation
MC type of chest wall lymphoma
Extranodal diffuse large B-cell lymphoma
Demographics of chest wall lymphoma
Immunocompromised patients
(transplant, HIV)
TOC chest wall lymphoma
CRT and chemotherapy (CHOP)
MC chemotherapy for chest wall lymphoma
CHOP
- Cytoxan (cycolphosphamide)
- Adriamycin (doxarubicin)
- Vincristine
- Prednisone
Workup for soft tissue sarcoma of the chest wall
- CT: evalute for pulmonary mets
- MRI: evaluate infiltration and relation to adjacent vital structures
TOC for soft tissue sarcoma of chest wall
WLE ( 1 cm margin)
*include biopsy site in WLE
Role of XRT for soft tissue sarcoma of the chest wall
- Residual disease
- Inadequate margins
- Tumors > 5 cm
- Highly invasive tumors (high-grade)
TOC for local recurrence of soft tissue sarcoma of chest wall
Resection (WLE)
Solitary pulmonary lesions = resection
TOC for XRT-induced sarcomas
WLE
(very aggressive tumors)
Painless, slowly enlarging, violaceous chest wall mass that is associated with a history of XRT
Angiosarcoma
TOC = WLE
TOC for solitary metastatic tumors to chest wall
Resection +/- XRT
- Melanoma
- Breast carcinoma
- Lung carcinoma
- Mesothelioma
- Renal cell carcinoma
MC benign rib lesion in children
Fibrous dysplasia of the bone
- Maturation defect
- May be associated with trauma
- Painless mass
CXR appearance of fibrous dysplasia of the bone
Fusiform mass with thinning of the cortex an no calcifications
TOC for fibrous dysplasia of the bone
Resection whtere the deformity has occurred
MC benign tumor of chest wall cartilage
Chondroma
- Appear similar to chondrosarcoma (requires biopsy or resection to r/o malignancy)
Benign chest wall tumor that typically presents as mass associated wtih rib fractures
Osteochondroma
- Resection is performed to prevent further tissue displacement
Benign tumor develooping from muscula aponeurosis
Desmoid tumor
Demographics of desmoid tumors
- Most common in females (2:1)
- Familial adenomatous polyposis association
- Sites of prior trauma or scarring
Gardner’s syndrome is a genetic disorder characterized by multiple colonic polyps and tumors outside the colon. The extracolonic tumors may include osteomas of the skull, thyroid cancer, epidermoid cysts, fibromas and sebaceous cysts. The multiple colon polyps predispose to development of colon cancer. Gardner’s syndrome is caused by mutation in the APC gene located in chromosome 5q21 and is recognized as a phenotypic variant of FAP.
Histologic appearance of Desmoid tumors
Sheets of fibroblasts with abundant collagen
MC presentation of Desmoid tumors
Painful mass fixed to deep tissues (but not skin)
TOC Desmoid tumors
WLE with 2-4 cm margin
Incidence of recurrence of Desmoid tumors following resection
25-50%
Role of XRT and/or chemotherapy for Desmoid tumors of the chest wall
- XRT: margin-positive resections
- Chemotherapy: none to minimal (not supported by trials)
Other less common benign chest wall tumors
- Lipoma
- Fibroma
- Neurofibroma
- Gangioneuroma
- Schwannoma
- Giant cell tumor
Oveall treatment strategy for chest wall tumors
Multidisciplinary, multimodality approach
(primarily due to the infrequency with with most practitioners encounter them)
- Most chest wall lesions are resected (including benign lesions)
Chest wall reconstruction technique used for resection defects < 5 cm or posterior resections covered by scapula
None required
Indications for chest wall reconstruction
- Defects > 5 cm
- Defects involving 2 or more adjacent ribs
Surgical options for chest wall reconstruction
- Methyl methacrylate/non-absorbable mesh “sandwich”
- Tissue flaps (latissimus, rectus, pectoralis, myocutaneous)
- Particularly useful in irradiated tissue beds
- Plastic surgery consultation
Sites of metastasis for primary malignant chest wall tumors
Lungs
Liver
- Long-term surveillance warranted (serial chest CT)

Aneurysmal Bone Cyst

Cavernous Hemangioma



Chondromyxoid fibroma

Chondrosarcoma

Ewing Sarcoma

fibrous dysplasia

Ganglioneuroma

Giant cell tumor

Lipoma

Osteochondroma

Osteosarcoma

Paraganglioma

plasmacytoma
Spindle cell lipoma
The most common presentation is that of a slow-growing painful mass. Imaging demonstrates a lobulated mass arising in the medullary portion of the rib or sternum often with cortical bone destruction. These are often missed on standard chest radiography but CT scan of the chest will easily identify a lesion and help characterize both local and metastatic extent of disease.
Chondrosarcoma
Name that chest wall Mass?
- Arises in the ribs near the chostochondral junction anteriorly.
- lobulated radiodense, displaces bony cortex but does not penetrate it.
- Diffuse calcification or focal with a stippled pattern.
- Histology: mature hyaline cartilagewith foci of myxoid degeneration and calcification.
Chondroma
Name that chest wall Mass?
- Origin: anywhere, frequently in the posterior ribs
- Radiographic appearance: central fusiform expanded mass with thinning of cortex, cortical bone erosion can be present.
- Calcifiction: none
- Histology: fish-hook configuration of trabeculae and lack of transformation of the coarse bony fibers to lamellar bone, represents a maturation defect.
- Young adults, in association with trauma.
Fibrous dysplasia
Name that chest wall Mass?
- Origin: metaphysis, grows in a direction opposite to that of the adjacent bone.
- Radiographic appearance: can have a focal radiolucent area surrounded by osteosclerotic tissue.
- Histology: Mature bone trabeculae covered by a cartilaginous cap.
- Occurs in the first or second decade of life.
Osteochondroma
(Most common benign bone lesion)
Name that chest wall Mass?
- Origin:Lymphoreticular system, not a true tumor; occurs in metaphysis of diaphysis
- Radiographic appearance: osteolytic activity with adjacent osteosclerosis
- Histology:abundance of Langerhans cells, giant cells, eosinophils and neutrophils.
- 5-15yo, frequently confused with Ewing’s sarcoma or osteomyelitis.
Eosinophilic granuloma
(histiocytosis X)
Name that chest wall Mass?
- Origin:
- Radiographic appearance:
- Calcifiction:
- Histology:
Name that chest wall Mass?
- Origin:
- Radiographic appearance:
- Calcifiction:
- Histology:
Name that chest wall Mass?
- Origin:
- Radiographic appearance:
- Calcifiction:
- Histology: