PubMed Health⌕ Search

Biomedical subjects

Daniel M Lichtstein

Publications and source records attributed to Daniel M Lichtstein.

8 recordsLinked to original sources

Endocarditis associated with antineutrophil cytoplasmic antibodies: a case report and review of the literature.

We report a case of subacute bacterial endocarditis associated with small vessel vasculitis and a strongly positive cytoplasmic antineutrophil cytoplasmic antibody (c-ANCA) test. It is important to recognize this cause of positive c-ANCA because infectious endocarditis may closely mimic the clinical manifestations of ANCA-associated vasculitides such as Wegener granulomatosis or microscopic polyangiitis. Furthermore, ANCA-associated vasculitis may result in noninfectious endocarditis, which may be confused with bacterial endocarditis. In this paper, we review reported cases of ANCA-positive bacterial endocarditis and compare them to the reported cases of ANCA-associated idiopathic vasculitis with endocardial compromise.

Antibodies, Antineutrophil Cytoplasmic↗

Rhabdomyolysis associated with hyperthyroidism.

BACKGROUND: Nontraumatic rhabdomyolysis has been associated with alcohol and drug abuse, seizures, strenuous exercise, muscle hypoperfusion, hyperthermia, electrolyte disturbances, diabetic coma, and hypothyroidism. Hyperthyroidism can be associated with several neuromuscular manifestations, such as thyrotoxic myopathy and thyrotoxic periodic paralysis, both associated with weakness and normal creatine phosphokinase levels. There have been only three reported cases of rhabdomyolysis as a result of thyrotoxicosis. We are reporting the fourth case of such association. CASE REPORT: The patient is a 26-year-old black woman with history of hypertension. She presented to the clinic with blurred vision, headaches, palpitations, weight loss, weakness, and persistent high blood pressure. She was found to have exophthalmus, lid lag, and a symmetric, smooth, and diffuse goiter. Ptosis and diplopia were absent; neurologic examination findings was normal. The patient had positive TPO antibodies, elevated free T4 level, and low thyroid-stimulating hormone (TSH) level. Graves disease was diagnosed and propylthiouracil was prescribed. The patient then returned to the clinic 2 weeks later with weakness and myalgias. Her physical examination findings were unchanged except for mild muscle weakness. Laboratory evaluation showed normal electrolytes, normal renal function, and negative urine drug screening. Creatine phosphokinase was 1276 U/L. Her free T4 and T3 levels were elevated and TSH level was low. The patient was treated with aggressive oral fluid resuscitation. Propylthiouracil was continued and free T4 and T3 normalized along with creatine phosphokinase with resolution of symptoms. CONCLUSIONS: Hyperthyroidism may, theoretically, cause rhabdomyolysis by means of increasing energy consumption associated with depletion of muscle energy stores and substrates. Our patient constitutes the fourth reported case of rhabdomyolysis associated with hyperthyroidism.

Adult↗

Septic thrombophlebitis: diagnosis and management.

Septic thrombophlebitis, as a result of invasion from adjacent nonvascular infections, includes conditions such as Lemierre syndrome (internal jugular vein septic thrombophlebitis), pylephlebitis (portal vein septic thrombophlebitis), and septic thrombophlebitis of the dural sinuses and the pelvic veins. All of these conditions are associated with a very high mortality if untreated. Appropriate antibacterial therapy dramatically improves the outcome of these infections and results in a low mortality rate, with the notable exception of septic thrombophlebitis of the dural sinuses. The endovascular nature of these infections results in secondary metastatic disease, including pneumonia, endocarditis, and arthritis due to septic embolization and/or hematogenous bacterial spread. The appropriate diagnosis and management of these infections depends on a high degree of clinical suspicion, the use of imaging studies, and early initiation of empiric antibacterial therapy. In this article, we review the diagnosis and management of septic thrombophlebitis, focusing on Lemierre syndrome, pylephlebitis, and septic thrombophlebitis of the pelvic veins.

Anti-Bacterial Agents↗

Large vessel involvement in ANCA-associated vasculitides: report of a case and review of the literature.

Vasculitides are currently classified according to the size of the vessels involved and characteristic clinical and histopathologic findings. Antineutrophil cytoplasmic antibodies (ANCA) and other serologic tests have been used to further characterize small vessel vasculitides. Large vessel involvement in ANCA-associated small vessel vasculitides has been overlooked in the medical literature. Here, we report a case of fatal aortitis and aortic dissection in a patient with microscopic polyangiitis and review reported cases of large vessel involvement in ANCA-associated vasculitides since 1990. We have attempted to characterize this subgroup of patients. Large vessel disease in ANCA-associated vasculitis may present as stenosing large vessel arteritis, aneurysmal disease, aortic dissection, aortic rupture, aortic regurgitation, and death. Prominent perivascular inflammation may present as mediastinal, cervical or abdominal soft tissue masses. ANCA-associated large vessel disease should be considered in the differential diagnosis of these disorders. The epidemiologic, clinical and pathologic characteristics of these patients differ from those of the well-defined large vessel vasculitides such as giant cell (temporal) arteritis or Takayasu's arteritis. We suggest that large vessel involvement is part of the spectrum of ANCA-associated vasculitis rather than an overlap with other large vessel vasculitides. It occurs in both myeloperoxidase- and proteinase 3-positive patients with either Wegener's granulomatosis or microscopic polyangiitis, but has not been reported in Churg-Strauss syndrome. Large vessel vasculitis can precede small vessel vasculitis or occur in the absence of small vessel involvement. We hope this report will contribute to the ongoing development of classification systems for the vasculitic syndromes.

Aortic Dissection↗

Heeding clues to giant cell arteritis. Prompt response can prevent vision loss.

To return to the case vignette, the new onset of headache in a 74-year-old woman with anemia and a markedly elevated ESR should alert the physician to the strong possibility of giant cell arteritis. Vision loss is the most significant potential early complication. Temporal artery biopsy is indicated, and treatment with corticosteroids should be started immediately. Close monitoring of the patient's symptoms and laboratory parameters is critical, as is surveillance for potential late complications.

Adrenal Cortex Hormones↗

The evolution of Lemierre syndrome: report of 2 cases and review of the literature.

Lemierre syndrome (postanginal septicemia) is caused by an acute oropharyngeal infection with secondary septic thrombophlebitis of the internal jugular vein and frequent metastatic infections. A high degree of clinical suspicion is necessary for diagnosis. Fusobacterium necrophorum is the usual etiologic agent. The disease progresses in several steps. The first stage is the primary infection, which is usually a pharyngitis (87.1% of cases). This is followed by local invasion of the lateral pharyngeal space and IJV septic thrombophlebitis (documented in 71.5% of cases), and finally, the occurrence of metastatic complications (present in 90% of cases at the time of diagnosis). A sore throat is the most common symptom during the primary infection (82.5% of cases). During invasion of the lateral pharyngeal space and IJV septic thrombophlebitis, a swollen and/or tender neck is the most common finding (52.2% of patients) and should be considered a red flag in patients with current or recent pharyngitis. The most common site of metastatic infection is the lungs (79.8% of cases). In contrast to the preantibiotic era, cavitating pneumonia and septic arthritis are now uncommon. Most patients (82.5%) had fever at some stage during the course of the disease. Gastrointestinal complaints such as abdominal pain, nausea, and vomiting were common (49.5% of cases). An elevated white blood cell count occurred in 75.2% of cases. Hyperbilirubinemia with slight elevation of liver enzyme levels occurred in one-third of patients, but frank jaundice was uncommon, in contrast to its high frequency reported in the preantibiotic era. We conclude that, most likely as a consequence of widespread antibiotic use for pharyngeal infections, the typical course of the disease has changed since Lemierre's original description. The typical triad in our series was: pharyngitis, a tender/swollen neck, and noncavitating pulmonary infiltrates. The previous classical description of severe sepsis with cavitating pneumonia and septic arthritis was not commonly seen in our review. Mortality was low in our series (6.4%), but significant morbidity occurred, which was likely preventable by early diagnosis and treatment. The pathophysiology, natural history, diagnostic methods for internal jugular vein thrombosis, and management are discussed.

Abdominal Pain↗

Expression of the chemokine receptor CCR7 in prostate cancer presenting with generalized lymphadenopathy: report of a case, review of the literature, and analysis of chemokine receptor expression.

PURPOSE: Generalized lymphadenopathy is a rare presentation of prostate cancer. We report a case and review reported cases in the literature. Because of the association of chemokine receptor expression with specific metastatic patterns, we tested for expression of chemokine receptors known to mediate migration to lymph nodes. METHODS: We performed a MEDLINE (National Library of Medicine, Bethesda, MD) database search for case reports during the last 32 years using "prostate cancer," "lymphadenopathy," "metastatic to lymph nodes," and "mimicking lymphoma" as keywords. Expression of the CXCR4 and CCR7 chemokine receptors was assessed by immunohistochemistry. Laser capture microdissection and reverse transcription polymerase chain reaction for CXCR4 were used to exclude nonspecific binding. RESULTS: Of 153 patients with prostate cancer presenting with lymphadenopathy (LAD) described in the literature, 67 (44%) presented with supraclavicular adenopathy, 29 (19%) retroperitoneal, 22 (14%) mediastinal, 15 (10%) cervical, 9 (6%) inguinal, and 2 (1%) axillary LAD. Only 9 patients presenting with generalized LAD have been previously reported. Monoclonal antibodies to CCR7 showed intense staining in the patient's tumor epithelium. Little or no staining was observed for CXCR4. Reverse transcription polymerase chain reaction for chemokine receptors on ribonucleic acid (RNA) recovered from the patient's sample failed to express messenger RNA for CXCR4 but did express messenger RNA for CCR1, CCR4, and CCR5. CONCLUSIONS: Prostate cancer may present on rare occasions with generalized adenopathy. Variable expression of chemokine receptors may be associated with organ specific patterns of metastasis. In this case, expression of CCR7 may have accounted for the unusual predilection of this patient's prostate cancer for lymph nodes.

Adult↗