Primary lymphoma of the bone: Difference between revisions
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*If left untreated, patients with primary lymphoma of the bone may progress to develop | *If left untreated, patients with primary lymphoma of the bone may progress to develop | ||
*Common complications of primary lymphoma of the bone, include: | *Common complications of primary lymphoma of the bone, include: | ||
*Prognosis is generally | *Prognosis is generally good, and the 5-year survival rate of patients with primary lymphoma of the bone is approximately >80%. | ||
== Diagnosis == | == Diagnosis == |
Revision as of 20:48, 2 May 2016
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Maria Fernanda Villarreal, M.D. [2]
Synonyms and keywords: Synonym 1; Synonym 2; Synonym 3
Overview
Primary lymphoma of the bone (also known as "PLB" ) is an uncommon malignancy that accounts for less than 5% of all primary bone tumors. The majority of cases are of the non-Hodgkin type, with Hodgkin disease accounting for only 6% of cases.
Historical Perspective
- Primary lymphoma of the bone was first discovered by [scientist name], a [nationality + occupation], in [year] during/following [event].
Classification
- Primary lymphoma of the bone may be classified according to location into 4 groups:
- PBL 1: solitary bone lymphoma
- PBL 2: multifocal bony lesions
- PBL 3: cases with distant nodal disease
- PBL 4: cases with visceral disease
Pathophysiology
- The pathogenesis of primary lymphoma of the bone is characterized by
- The has been associated with the development of primary lymphoma of the bone.
- On gross pathology, characteristic findings of primary lymphoma of the bone, include:
- Fish flesh appearance of lymphoma
- Extraosseous extension and indistinct margins
- On microscopic histopathological analysis, characteristic findings of primary lymphoma of the bone, include:
- Diffuse growth pattern
- Infiltrating between bone trabeculae
- Large atypical cells
- Abundant cytoplasm
- Large bizarre cells, centroblasts, and immunoblasts.
Causes
- The most common cause of primary lymphoma of the bone is
Differentiating Primary Lymphoma of the Bone from Other Diseases
- Primary lymphoma of the bone must be differentiated from other diseases that cause bone pain, fever, and limited range of motion, such as:
- [Differential dx1]
- [Differential dx2]
- [Differential dx3]
Epidemiology and Demographics
- The prevalence of primary lymphoma of the bone is approximately [number or range] per 100,000 individuals worldwide.
Age
- Primary lymphoma of the bone is more commonly observed among patients aged 50 to 70 years old.
- Primary lymphoma of the bone is more commonly observed among adults and elderly patients.
Gender
- Primary lymphoma of the bone affects men and women equally.
Race
- There is no racial predilection for primary lymphoma of the bone.
Risk Factors
- The most common risk factors in the development of primary lymphoma of the bone is previous exposure to radiation.
Natural History, Complications and Prognosis
- The majority of patients with primary lymphoma of the bone remain asymptomatic for [duration/years].
- Early clinical features include [manifestation 1], [manifestation 2], and [manifestation 3].
- If left untreated, patients with primary lymphoma of the bone may progress to develop
- Common complications of primary lymphoma of the bone, include:
- Prognosis is generally good, and the 5-year survival rate of patients with primary lymphoma of the bone is approximately >80%.
Diagnosis
Symptoms
- Symptoms of primary lymphoma of the bone may include the following:
- Bone pain
- Limited range of motion
- Morning stiffness
- Low grade fever
- Night sweating
Physical Examination
- Patients with primary lymphoma of the bone usually appear pale or malnourished.
- Physical examination may be remarkable for:
- [finding 1]
- [finding 2]
- [finding 3]
- [finding 4]
- [finding 5]
- [finding 6]
Laboratory Findings
- There are no specific laboratory findings associated with primary lymphoma of the bone.
- In some cases, findings may include:
- Elevated LDH
- Elevated B2 microglobulin
Imaging Findings
- [Imaging study 1] is the imaging modality of choice for primary lymphoma of the bone.
- On [imaging study 1], primary lymphoma of the bone is characterized by [finding 1], [finding 2], and [finding 3].
- [Imaging study 2] may demonstrate [finding 1], [finding 2], and [finding 3].
Other Diagnostic Studies
- Primary lymphoma of the bone may also be diagnosed using [diagnostic study name].
- Findings on [diagnostic study name] include [finding 1], [finding 2], and [finding 3].
Treatment
Medical Therapy
- There is no treatment for primary lymphoma of the bone; the mainstay of therapy is supportive care.
- The mainstay of therapy for primary lymphoma of the bone is [medical therapy 1] and [medical therapy 2].
- [Medical therapy 1] acts by [mechanism of action1].
- Response to [medical therapy 1] can be monitored with [test/physical finding/imaging] every [frequency/duration].
Surgery
- Surgery is the mainstay of therapy for primary lymphoma of the bone.
- [Surgical procedure] in conjunction with [chemotherapy/radiation] is the most common approach to the treatment of primary lymphoma of the bone.
- [Surgical procedure] can only be performed for patients with [disease stage] primary lymphoma of the bone.
Prevention
- There are no primary preventive measures available for primary lymphoma of the bone.
- Effective measures for the primary prevention of primary lymphoma of the bone include [measure1], [measure2], and [measure3].
- Once diagnosed and successfully treated, patients with primary lymphoma of the bone are followed-up every [duration]. Follow-up testing includes [test 1], [test 2], and [test 3].