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Stage I mantle-cell lymphoma that was difficult to differentiate from abdominal tuberculous lymphadenitis and metastatic pancreatic cancer.

A 62-year-old Japanese man was referred to our hospital because of general fatigue. Abdominal ultrasonography and enhanced computed tomograp … oma that was difficult to differentiate from metastatic pancreatic cancer and abdominal tuberculous lymphadenitis.

Comprehensive pathological insights and molecular detection of caseous lymphadenitis caused by Corynebacterium pseudotuberculosis in slaughtered sheep, goats, and cattle.

Objectives: Caseous lymphadenitis (CLA) is one of the significant economically important diseases of small ruminants caused by Corynebacterium pseudotuberculosis. Despite the occurrence of CLA worldwide, there are no reports of CLA in slaughtered ruminants in Bangladesh. This study was designed to investigate the pathology and molecular detection of CLA in slaughtered sheep, goats, and cattle in Bangladesh. Materials and Methods: A total of 102 goats, 16 sheep, and 50 cattle were examined at several slaughterhouses in Mymensingh Sadar. Mesenteric lymph nodes, lungs, liver, spleen, and kidneys …

Integrated Field Evaluation of a Caseous Lymphadenitis Vaccine and Environmental Bacteriological Profiling in Commercial Goat Farms in South Korea.

Background/Objectives: Caseous lymphadenitis (CLA), caused by Corynebacterium pseudotuberculosis, is difficult to control on goat farms because of subclinical infection, abscess rupture, environmental contamination, and repeated herd-level exposure. This study evaluated a Korean inactivated CLA vaccine under commercial goat farm conditions and combined vaccination outcomes with farm-level bacteriological profiling. Methods: Goats from three commercial farms were allocated according to baseline CLA serostatus and vaccination status into seropositive vaccinated, seronegative vaccinated, seroposi…

Congenital Tuberculous Lymphadenitis in a Preterm Neonate Born to a Comatose Mother in a High TB-Burden Setting: A Case Report.

BACKGROUND: Congenital tuberculosis (TB) is a rare but often fatal condition, particularly in preterm neonates within high-burden regions like the Democratic Republic of Congo (DRC). Diagnosis is complicated by nonspecific symptoms and resource limitations, with maternal critical illness further delaying detection and increasing vertical transmission risk. CASE PRESENTATION: This case report details a preterm male infant (30 weeks' gestation) born vaginally to an HIV-negative mother who experienced a 2-month coma during pregnancy in the DRC. The neonate presented at 3 weeks with cervical lymp

The Etiological and Antimicrobial Susceptibility Profiles of the Bacteria Obtained from Ovine Caseous Lymphadenitis Cases in the Çankırı Region, Türkiye.

Sheep caseous lymphadenitis (CLA) causes significant economic losses in the livestock sector by causing a loss in the quantity and quality of animal products and a loss in the breeding value of animals. Although the primary agent in CLA's etiology is Corynebacterium pseudotuberculosis, some other opportunistic microorganisms also play a role. Therefore, the control and treatment of CLA necessitates the identification of the relevant etiological agents. This study aimed to conduct an in vitro culture and molecular characterization (PCR analysis and 16S rRNA sequencing) of the bacteria involved …

Pathology, bacteriology and molecular studies on caseous lymphadenitis in Camelus dromedarius in the Emirate of Abu Dhabi, UAE, 2015-2020.

Caseous lymphadenitis (CLA) or pseudotuberculosis is a chronic zoonotic bacterial disease caused by Corynebacterium pseudotuberculosis, which affects livestock and humans. This study aimed to describe the pathology, bacteriology and confirm the identity of the pathogen by 16S rRNA gene sequencing in Camelus dromedarius. A total of 12 camels with suspected CLA in three regions of Abu Dhabi Emirate (Abu Dhabi, Al Ain and Al Dhafra), United Arab Emirate (UAE) were subjected to clinical and postmortem examinations from January 2015 to December 2020. Clinically, camels were emaciated and showed the…

Pyogranulomatous enteritis and mesenteric lymphadenitis in an adult llama caused by Rhodococcus equi carrying virulence-associated protein A gene.

We report herein Rhodococcus equi infection in an 11-y-old, male llama with a history of diarrhea and endoparasitism. Postmortem examination revealed granulomatous and ulcerative enteritis, pyogranulomatous mesenteric lymphadenitis, fibrinosuppurative peritonitis, and granulomatous hepatitis. Intralesional macrophages were laden with gram-positive cocci. Bacteriology identified R. equi, and cultures tested positive for R. equi choE and vapA genes by PCR. This case expands the reported spectrum of lesions associated with R. equi infections in llamas from pyogranulomatous bronchopneumonia and pe…

Peripheral tuberculous lymphadenitis in pediatrics: 16 years of experience in a tertiary care pediatric hospital of Buenos Aires, Argentina.

Extrapulmonary tuberculosis accounts for 15-20 % of all clinical presentations of tuberculosis. Peripheral tuberculous lymphadenitis is the second most common presentation of extrapulmonary tuberculosis in children, after pleural tuberculosis, in Argentina. We analyzed 92 patients with peripheral tuberculous lymphadenitis seen at the Department of Tisiology of Hospital de Niños "Dr. Ricardo Gutiérrez" between August 2000 and September 2015. The patients' mean age was 8.7 ± 5 years. Nodal sites corresponded to single peripheral (31.5 %), multiple peripheral (20.6 %), and peripheral associated w…

Outbreak of Bacille Calmette-Guérin-related lymphadenitis in Saudi children at a university hospital after a change in the strain of vaccine.

BACKGROUND AND OBJECTIVES: Bacille Calmette-Guérin (BCG) vaccination is part of the expanded program of vaccination in Saudi Arabia. Lymphadenitis is the most common complication of the BCG vaccine. We observed an increase in the rate of BCG lymphadenitis that coincided with the introduction of a new strain of BCG vaccine. The aim of this study was to determine the incidence and the possible causes of BCG lymphadenitis at a university hospital in Riyadh, Saudi Arabia. DESIGN AND SETTING: Retrospective chart review and prospective follow up of infants who received BCG vaccine. METHODS: We stu…

Dual infection with Mycobacterium tuberculosis and Pneumocystis jiroveci Lymphadenitis in a Patient with HIV infection: case report and review of the literature.

We report a case of dual Mycobacterium tuberculosis (TB) and Pneumocystis jiroveci (carinii) (PCP) lymphadenitis in a patient with HIV who had been receiving trimethoprim-sulfamethoxazole (TMP-SMX) as systemic prophylaxis for PCP. This patient was successfully treated with antituberculosis medications and TMP-SMX. Our review of the literature identified this as the first reported case of dual TB and PCP lymphadenitis in an HIV-infected host and highlights the potential limitations of TMP-SMX prophylaxis.

[Kaposi's disease. Form with lymph node manifestation in a young African. Difficulty in the initial diagnosis and relation to dysimmune lymphadenitis].

The authors report a case of Kaposi's sarcoma in a 38-year-old Malian. Onset occurred one year after an episode of febrile polyadenopathy with histologic features suggestive of immune dysfunction lymphadenitis. Diagnosis of Kaposi's sarcoma was firmly established only following occurrence of secondary skin lesions. This case exemplifies the diagnostic problems raised by those forms of Kaposi's sarcoma which present as lymph node involvement. In the index case, the authors discuss the significance of the initial polyadenopathy, and speculate whether it was an initial stage of Kaposi's sarcoma o…

PPD testing as a diagnostic aid in non-tuberculous mycobacteriosis. Clinical and immunological investigations in 4 children with cervical lymphadenitis.

Four children suffering from unilateral cervical lymphadenitis with histopathological changes typical of mycobacteriosis were seen during a short time. None of the Children had been BCG vaccinated. Mycobacteria belonging to the Myobacterium aviumintracellulare complex were isolated from excised lymph nodes in two of the patients. Intracutaneous tests with PPD from M. tuberculosis were negative in all the children, whereas two children responded to each of 3 PPDs prepared from atypical mycobacteria. Two patients were unreactive in all the skin tests. Lymphocyte transformation tests in vitro wit…

[Estimation of economic burden of bacillus Calmette-Guérin lymphadenitis in Shandong Province based on compensation for abnormal reaction to vaccination].

Objective: To investigate the economic burden of bacillus Calmette-Guérin (BCG) lymphadenitis in Shandong Province. Methods: From May 2011 to December 2019, 304 patients applying for the province-level compensation of BCG lymphadenitis was selected from Shandong Province in this study. The basic situation, vaccination, outpatient (inpatient) records, cost and relevant information of those patients were collected to calculate the direct economic burden (including direct medical costs and direct non-medical costs), indirect economic burden and total economic burden. Comparison of the difference …

The Sustained and Marked Elevation of Serum Procalcitonin in a Hemodialysis Patient with Tuberculous Lymphadenitis, but Without the Evidence of Sepsis: A Case Report.

BACKGROUND: The elevation of serum procalcitonin (PCT) has been considered as a marker of systemic bacterial infection and sepsis. However, the marked elevation of PCT in non-sepsis conditions was rare. Here, we report a rare case of sustained markedly elevation of serum PCT in a dialysis patient with tuberculosis, but without the evidence of sepsis. CASE PRESENTATION: A 25-year-old man on maintenance hemodialysis was admitted to the hospital for kidney transplantation. On admission, physical examination revealed multiple lymph nodes were palpable on both sides of the neck which was later con

Diagnostic pitfalls in pathological diagnosis of infectious disease: patients with syphilitic lymphadenitis often present with inconspicuous history of infection.

Retrospective study was applied to 16 cases of syphilitic lymphadenitis to elucidate the pathological diagnostic features. The typical morphology of syphilitic lymphadenitis includes: (i) well preserved or partially destroyed lymph node structure; (ii) reactive hyperplasia of lymph follicles with broadened germinal centers in the cortex and medulla of the lymph node; (iii) thickened fibrotic lymph node capsules with infiltration of plasma cells; and (iv) phlebitis and endarteritis in varying degree. Additional morphology includes: (i) focal histiocytes with ingested debris; (ii) noncaseating g…

Клубничный менингит и лимфаденит, имитирующий возврат лимфомы Буркита (18)F-FDG-PET/CT: A Case Report.

Туберкулез (ТБ) может проявляться в различных формах и иногда может быть ошибочно истолкован как злонамеренный. Таким образом, мы сообщаем о 53-летнем мужчине, который в 2009 году диагностировал и лечил лимфому Буркита, который добился полной ремиссии, подтвержденной вычисленным томографическим сканированием. В ходе последующих действий 2 года спустя он пожаловался на боль в левом бедре, которая требовала изучения с помощью магнитного резонансного изображения и целого тела (18) F-флудоксиглюкозы-позитрона эмиссии (FDG-PET)/CT, которая показала доброкачественное повреждение левого бедра, связан

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Tuberculosis (TB) can present with various forms and can occasionally be mistaken for malignancy. Hereby, we report a 53-year-old man diagno … es. CSF TB culture grew Mycobacterium tuberculosis. Mediastinal lymph node biopsy also confirmed TB lymphadenitis. Four antituberculosis drugs were started. One year later, a PET/CT scan showed regression of all the involved lymph nodes. This case highlights the importance of excluding TB in patients with suspected malignancy, especially if they belong to endem …

Contralateral intramammary silicone lymphadenitis in a patient with an intact standard dual-lumen breast implant in the opposite reconstructed breast.

Silicone lymphadenopathy is a recognized complication of silicone gel implant rupture; the ipsilateral axillary lymph nodes are most commonly involved. We report imaging findings on a range of different imaging modalities and biopsy results in a case of biopsy-proven silicone lymphadenitis involving contralateral intramammary and axillary lymph nodes in a patient with an intact standard dual-lumen breast implant in the opposite reconstructed breast. This case demonstrates that in a patient with disrupted lymph drainage due to prior mastectomy and axillary node dissection for breast cancer trea…