Oligoarticular tuberculous infection of the knee and acromioclavicular joints: an unusual manifestation and characteristic magnetic resonance imaging findings / diz ve akromiyoklavikuler eklemlerin oligoartikuler tuberkuloz enfeksiyonu: nadir bir gorunum ve karakteristik manyetik rezonans goruntuleme bulgulari.
An increased incidence of tuberculosis has been seen in recent
years due to factors such as immunocompromising diseases and drug use.
There has also been an increase in osteoarticular involvement. In this
article, we report a 22-yearold male patient who was diagnosed with
tuberculosis of the knee and acromioclavicular joints. Tuberculosis of
this joint is very rare, and concomitancy with the knee has not been
reported in the literature. The definitive diagnosis was performed by
the histopathological examination of a synovial biopsy. The chest
radiograph showed cavitation and the magnetic resonance imaging
examination showed characteristic demonstrative findings.
Antituberculosis drug treatment was started with a satisfactory
Key words: Acromioclavicular joint; knee; MRI; osteoarticular tuberculosis.
Son yillarda immun yetersizlik olusturan hastaliklar ve ilac kullanimi gibi nedenlerle tuberkuloz insidansinda artis gorulmektedir. Ayrica osteoartikuler tutulum da artmistir. Bu yazida diz ve akromiyoklavikuler eklem tuberkulozu tanisi konulan 22 yasinda bir erkek hasta sunuldu. Bu eklemin tuberkulozu cok nadirdir ve diz eklem tutulumu ile birlikteligi literaturde bildirilmemistir. Kesin tani sinoviyal biyopsinin histopatolojik incelemesiyle konuldu. Gogus radyografisinde kavitasyon ve manyetik rezonans goruntuleme incelemesinde ise ile karakteristik demonstratif bulgular saptandi. Antituberkuloz ilac tedavisine tatmin edici bir yanit ile baslandi.
Anahtar sozcukler: Akromiyoklavikuler eklem; diz; MRG; osteoartikuler tuberkuloz.
Tuberculosis (Health aspects)
Antitubercular agents (Research)
Antitubercular agents (Health aspects)
Diagnostic imaging (Health aspects)
Magnetic resonance imaging (Health aspects)
Medical research (Health aspects)
Medicine, Experimental (Health aspects)
Knee (Health aspects)
Cevik, Figen Ceylan
|Publication:||Name: Turkish Journal of Rheumatology Publisher: Turkish League Against Rheumatism Audience: Academic Format: Magazine/Journal Subject: Health Copyright: COPYRIGHT 2011 Turkish League Against Rheumatism ISSN: 1309-0291|
|Issue:||Date: March, 2011 Source Volume: 26 Source Issue: 1|
|Topic:||Event Code: 310 Science & research|
|Product:||Product Code: 2834850 Tuberculostatic Preparations; 8000200 Medical Research; 9105220 Health Research Programs; 8000240 Epilepsy & Muscle Disease R&D NAICS Code: 325412 Pharmaceutical Preparation Manufacturing; 54171 Research and Development in the Physical, Engineering, and Life Sciences; 92312 Administration of Public Health Programs SIC Code: 2834 Pharmaceutical preparations|
According to the World Health Organization (WHO) report in 2009,
the total number of incident cases of tuberculosis (Tbc) has been
increasing, although in absolute terms the number of cases per capita
has been falling as a result of population growth. However, the rate of
decline is slow at less than 1% per year. (1) In addition, the incidence
of Tbc remains high in both developing and developed countries. This is
largely due to the acquired immune deficiency syndrome (AIDS) epidemic
and other immunosuppressive factors, immigration, homelessness and a
decline in Tbc control programs. (2), (3) The introduction of anti-tumor
necrosis factor alpha (anti-TNF- [alpha]) drugs has rekindled interest
in Tbc encountered in rheumatology. (4)
Skeletal Tbc occurs in 1%-3% of cases and represents a third form of extra pulmonary Tbc after ganglion and kidney involvement. (5) Although Tbc can involve any area of the musculoskeletal system, the majority of the Tbc arthritis cases (~85%) present with chronic monoarthritis involving large and medium weight-bearing joints with the hip and knee being the most common sites. (6) Acromioclavicular joint involvement is very rare in Tbc arthritis. When a patient affected with chronic arthritis presents with insidious evolution and risk factors, it is very important to consider a Tbc etiology.
The aim of this case presentation is to describe the uncommon concomitant knee and acromioclavicular joint involvement in Tbc, characteristic magnetic resonance imaging (MRI) findings that could be shown in osteoarticular involvement, and the diagnostic problems that may arise and lead to a delay in treatment.
A 22-year-old man presented with an eight month history of shoulder and knee pain along with swelling. He was a university student. Eight months previously he experienced right shoulder and knee pain with swelling but no redness. He visited an outpatient clinic and was prescribed analgesic anti-inflammatory drugs. This treatment eliminated the shoulder and knee pain but did nothing to stop the swelling of those joints. He also complained of cough and sputum and reported a history of Tbc in his cousin.
Laboratory blood tests revealed an 8.65x109/L serum leukocyte count, 31 mm/hour erythrocyte sedimentation rate, and 64.7 mg/l serum reactive protein. A knee puncture was performed, and the synovial fluid analysis showed an increased protein level with an intensive accumulation of lymphocytes. Ziehl-Nielsen, gram stains, aerobic and anaerobic cultures, and deoxyribonucleic acid (DNA) testing for Mycobacterium tuberculosis (amplified using the polymerase chain reaction; PCR) were negative. Throat and sputum cultures were also negative.
Consolidation and irregular cavitation in the upper zone of the left lung was detected in the chest radiograph (Figure 1); however, knee radiographs were considered normal. Magnetic resonance imaging of the right knee revealed inflammation in the knee, around the joint and in the superior tibiofibular articulation. The knee MRI also revealed centrally necrotic abscesses with peripheral enhancement of the rim after a gadolinium injection (Figure 2). An MRI of the right shoulder also showed increased inflammatory signal changes in the acromioclavicular joint and adjacent soft tissue with enhancement after gadolinium injection (Figure 3). The purified protein derivative (PPD) skin test for Tbc measured 22 mm. A synovial biopsy taken from the knee detected granulomatous inflammation with caseation necrosis. Antibiotic treatment with isoniazid, rifampicin, ethambutol and pyrazinamide were prescribed for two months followed by rifampicin and isoniazid for seven months. The patient showed significant improvement in the knee and shoulder within two months and close to complete improvement within six months.
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Increased incidence of osteoarticular Tbc has been observed in recent years due to many factors including human immunodeficiency virus (HIV) infection, immigration from endemic areas, alcoholism, chronic kidney disorders, immunosuppressive therapy, homelessness, crowded living conditions, drug addiction, intra-articular steroid injection, systemic illness and poor access to medical care. (7-9) Tuberculosis is generally classified as pulmonary and extrapulmonary. Approximately 10-11% of extrapulmonary Tbc involves bone and joints (representing 1-3% of all cases of Tbc infection). Of these, 50% were associated with pulmonary Tbc. (6), (10)
The diagnosis of bone and joint Tbc is a clinical challenge due to its insidious onset, slow progression, difficulty of laboratory diagnosis and the occasional absence of extra-articular features. Spinal Tbc is the most common form of osteoarticular Tbc followed by the hip and knee. In spite of rare cases of direct inoculation, osteoarticular Tbc is caused by haematogenous, lymphatic or direct local spread of tubercle bacilli from other lesions, from a quiescent pulmonary primary or other extraosseous foci. (11), (12) In the present case, tubercle bacilli may have been spread by haematogenous or lymphatic means from one joint to the other as the involved joints were far from each other.
Tuberculous arthritis is characteristically monoarticular and rarely involves more than one joint. (13), (14) Furthermore, acromioclavicular joint involvement is very infrequent in Tbc arthritis. In this case we report both unusual presentations of Tbc arthritis: a rare location and the simultaneous inflammation of two joints.
Tuberculous arthritis commonly presents with chronic pain accompanied by swelling and progressive loss of function. The onset is usually insidious, the diagnosis often delayed, and functional results may be poor after treatment, especially when there is extensive bone and articular destruction. Furthermore, a history of Tbc infection or exposure may not be present and no radiographic evidence of pulmonary involvement can be identified in approximately 50% of patients. A negative tuberculin skin test does not exclude diagnosis, as is the case with immunocompromised patients. Radiological findings are nonspecific in early stages. As the disease progresses, periarticular osteoporosis, peripherally located osseous erosions and gradual narrowing of the cartilage space are seen as typical radiographic findings. (7), (11), (15) In this case, we detected articular and soft tissue changes which continued until specific antituberculous treatment was administered.
Magnetic resonance imaging is the best modality to evaluate soft tissue affection by demonstrating marrow changes, joint effusion, synovitis, pannus, and cartilage and bone erosions. (2), (16) Joint and periarticular involvement and lesions are particularly well defined by an MRI. The definitive diagnosis is performed from a positive mycobacterial culture and a histological examination of synovial fluid or synovial membranes. An examination of a biopsy specimen is an important and useful diagnostic method. Amplifying DNA of Mycobacterium tuberculosis from synovial fluid or bone by PCR could be useful for the early diagnosis of Tbc. We performed a definitive diagnosis through the histopathological examination of a synovial biopsy, a chest radiograph showing cavitation and the definitive demonstration on MRI examination. This was done in spite of the lack of positivity of mycobacterial culture and PCR. In addition, following the initiation of specific antituberculous treatment, the patient showed significant improvement in the knee and shoulder within two months with close to complete improvement within six months. We extended treatment to nine months in accordance with the recommendations for musculoskeletal tuberculosis in the literature and by the Turkey Ministry of Health. (17), (18)
In conclusion, acromioclavicular joint involvement is very rare in Tbc arthritis. The simultaneous involvement of knee and acromioclavicular joints has not been reported in the literature. Mycobacterium tuberculosis was not detected from sputum, throat or synovial specimens. A definitive diagnosis was secured by histological examination of a synovial biopsy. The MRI showed characteristic joint and soft tissue affection. Osteoarticular Tbc should be considered in patients who present with unexplained joint soft tissue swelling and pain, particularly if they are immunocompromised or live in an endemic area.
Declaration of conflicting interests
The authors declared no conflicts of interest with respect to the authorship and/or publication of this article.
The authors received no financial support for the research and/or authorship of this article.
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Remzi CEVIK, (1) Yasar BUKTE, (2) Kemal NAS, (1) Figen CEYLAN CEVIK, (1) Gokhan KIRBA, (3) Huseyin BUYUKBAYRAM (4)
(1.)Departments of Physical Medicine and Rehabilitation, (2.) Radiology, (3.) Pulmonary Disease, (4.) Pathology, Medical Faculty of Dicle University, Diyarbakir, Turkey
Received: April 28, 2009 Accepted: June 29, 2009
Correspondence: Remzi Cevik, M.D. Dicle Universitesi Tip Fakultesi, Fiziksel Tip ve Rehabilitasyon Anabilim Dali, 21280 Diyarbakir, Turkey. Tel: +90 412 - 248 80 01 e-mail: firstname.lastname@example.org
Presented at the 3rd National Congress of Rheumatic Diseases, May 14-18, 2008, Antalya, Turkey.
[c] 2011 Turkish League Against Rheumatism. All rights reserved
Turk J Rheumatol 2011;26(1):61-65
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