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Transmission of a pancreatic adenocarcinoma to a renal transplant recipient.

Transmission of donor tumours in solid organ transplant recipients is rare, but has been reported with fatal outcome in some cases depending on the original tumour type and location. We report a case of a pancreatic adenocarcinoma of donor origin presented as lymphangitis carcinomatosa of the lung in a renal transplant recipient 9 months after transplantation, which is likely to have contributed to the death of the patient 15 months after transplantation. The donor tumour was originally diagnosed on adrenal tissue removed from the donor kidney during bench preparation. At the time of the diagnosis this kidney and the liver of the multi-organ donor had been transplanted. The liver patient was urgently retransplanted within 24 h. The renal recipient opted not to have a transplant nephrectomy having been made aware of the risk of tumour transmission. The contralateral kidney was discarded. Management of recipients with potential transmission of initially undiagnosed donor malignancy is difficult. Early transplant nephrectomy may be the safest option.

Adenocarcinoma↗

Filarial antibody responses in Wuchereria bancrofti transmission area are related to parasitological but not clinical status.

In Wuchereria bancrofti transmission areas, three groups of individuals have been identified, according to the presence or absence of microfilariae or adult worm derived molecules in the blood compartment. These groups likely reflect individuals with different permissivity/resistance to the complete development of W. bancrofti cycle. The profile of filarial-specific immunoglobulins was analysed in W. bancrofti-exposed individuals in French Polynesia, according to the presence or absence of microfilariae (Mf) and adult worms, measured by Og4C3 circulating antigen. Individuals harbouring adult worms, have higher filarial-specific IgG4 but lower IgG3 and IgE levels, than adult worm-free individuals, independently of the presence of Mf. Low filarial-specific IgG1 and IgG2 levels were associated with the presence of Mf but independent of the presence/absence of adult worms. The filarial antibody responses were associated with the parasitological status of individuals but not with clinical symptoms such as hydroceles or limb lymphangitis or elephantiasis. The reduction of filarial-specific immunoglobulin levels was higher after treatment with diethylcarbamazine, than ivermectin, which likely reflects the better effect of the former on W. bancrofti adult worms. However, reduction of antibody levels was also observed in Mf-and adult worm-negative individuals. This could be due to the overall reduction of W. bancrofti transmission in the island where this study took place.

Adult↗

Wolbachia bacteria in filarial immunity and disease.

Lymphatic filarial nematodes are infected with endosymbiotic Wolbachia bacteria. Lipopolysaccharide from these bacteria is the major activator of innate inflammatory responses induced directly by the parasite. Here, we propose a mechanism by which Wolbachia initiates acute inflammatory responses associated with death of parasites, leading to acute filarial lymphangitis and adverse reactions to antifilarial chemotherapy. We also speculate that repeated exposure to acute inflammatory responses and the chronic release of bacteria, results in damage to infected lymphatics and desensitization of the innate immune system. These events will result in an increased susceptibility to opportunistic infections, which cause acute dermatolymphangitis associated with lymphoedema and elephantiasis. The recognition of the contribution of endosymbiotic bacteria to filarial disease could be exploited for clinical intervention by the targeting of bacteria with antibiotics in an attempt to reduce the development of filarial pathology.

Animals↗

Surgical therapy for adenocarcinoma of the cardia: modalities of recurrence and extension of resection.

In order to define the optimal extent of resection for cancer of the cardia, we considered 116 patients operated upon with five different surgical techniques. The procedures were: transabdominal total gastrectomy associated with distal esophagectomy in 38 patients; transabdominal total gastrectomy and left thoracotomic esophageal resection at the inferior pulmonary vein level in 26 patients; transabdominal total gastrectomy and right thoracotomic esophageal resection at the azygos vein level in 27 patients; transabdominal total gastrectomy and transhiatal lower third esophagectomy in 18 patients; transhiatal total esophagectomy and upper third gastrectomy with cervical esophago-gastroplasty in seven patients. Grading, staging, neoplastic lymphangitis, satellite intramural metastases, infiltration of the resection margin, site of recurrence, and survival were analyzed. N+ was the single independent prognostic factor for survival. A poorly differentiated grading was related to T (P = 0.0009), N (P = 0.001), satellite growth (P = 0.05), and infiltration of the resection margin (P = 0.0001). Recurrence was local in 26% and distant in 74% of patients. The modalities of recurrence were not related to the aggressiveness parameters and the surgical technique. Infiltration of the esophageal resection margin was related to the type of operation (P = 0.005) and survival (P = 0.02), but it was not related to the site of recurrence. Transabdominal total gastrectomy and the right thoracotomic esophageal resection procedure achieved free margins and control of the lymph nodal metastatic spread. Transabdominal total gastrectomy and right thoracotomic esophageal resection at the azygos vein level provides a radical oncologic resection, particularly in poorly differentiated tumors. However, surgery alone cannot cure the majority of adenocarcinomas of the cardia.

Adenocarcinoma↗

The murid filaria Monanema martini: a model for onchocerciasis. Part I. Description of lesions.

A study of the anatomo-pathological lesions induced by Monanema martini, a filaria with skin-dwelling microfilariae, was performed using 65 Lemniscomys striatus fixed from 30 minutes to 36 months after inoculation of the infective larvae, 5 Arvicanthis niloticus and 3 Meriones unguiculatus fixed during the patent phase, and controls. Attempts at quantification of lesions in L. striatus was made. Approximately 20% of L. striatus had microfilariae in the eyeballs, and many more presented ocular lesions. The delay of the patent period seems to have more effects on the gravity of lesions than repeated inoculations. The location of the lesions and parasites presuppose that microfilariae enter the eyeball through the lymphatic capillaries of the irido-corneal angles. Cutaneous lesions were often severe: there is a parallel between the importance of lesions and the abundance of microfilariae. Larvae are responsible for damage to various structures of the lymphatic system (thrombo-lymphangitis, acute or granulomatous lymphadenitis...) into which they migrate, explaining the mechanism of elephantiasis. These rodent lesions appear similar to those observed in human onchocerciasis and lymphatic filariasis. Whatever the M. martini stage and the organ examined, major lesions belonged to the inflammatory process. Various types of inflammatory reaction (acute, subacute, or chronic inflammation, scarring sclerosis etc.) can co-exist within a single tissue area. The accidental escape of a microfilaria from a lymphatic capillary into the connective tissue (including the corneal stroma) induces an inflammatory reaction. Thus M. martini, as human Onchocerca species, causes a chronic disease, associating recent lesions to old ones.

Animals↗

Pulmonary tumour emboli: a difficult ante-mortem diagnosis.

A woman with known metastatic breast cancer presented with subacute dyspnoea. Investigations were non-conclusive; provisional diagnoses of pulmonary thromboemboli and carcinomatous lymphangitis were made. Despite treatment the patient died 10 days after admission. Post-mortem examination showed extensive tumour emboli within the pulmonary arteries. The appropriate investigation and management of such patients is discussed.

Breast Neoplasms↗

Dormant metastases in medullary thyroid carcinoma. A case report.

Report on a patient in whom an extensively metastasizing medullary carcinoma of the thyroid was diagnosed at the age of 32 years. Noteworthy in her case history were watery diarrheas that had persisted for two years, suggesting that the medullary thyroid carcinoma had already existed for some time. Besides locoregional lymph node metastases, small foci of diffuse pulmonary metastases with lymphangitis carcinomatosa as well as osteoblastic skeletal metastases were present and intramammary metastases were detected later. The patient died from bilateral pleuropneumonia with empyema formation at the age of 47 years after an observation period of 15 years. During that period, no major changes in the pattern of metastatic spread were observed and one may therefore speak of "dormant" metastases in this case, although some manifestations showed increases and decreases in size.

Adult↗

[Mondor's disease of the female breast].

This report is based on eight patients with Mondor's syndrome. Its main clinical findings is linear retraction of breast skin probably due to thrombophlebitis or lymphangitis. The final diagnosis of Mondor's syndrome implies exclusion of breast cancer by mammography. A differential diagnosis of this entity is discussed.

Adult↗

Bacteriologic analysis of infected dog and cat bites. Emergency Medicine Animal Bite Infection Study Group.

BACKGROUND AND METHODS: To define better the bacteria responsible for infections of dog and cat bites, we conducted a prospective study at 18 emergency departments. To be eligible for enrollment, patients had to meet one of three major criteria for infection of a bite wound (fever, abscess, and lymphangitis) or four of five minor criteria (wound-associated erythema, tenderness at the wound site, swelling at the site, purulent drainage, and leukocytosis). Wound specimens were cultured for aerobic and anaerobic bacteria at a research microbiology laboratory and, in some cases, at local hospital laboratories. RESULTS: The infected wounds of 50 patients with dog bites and 57 patients with cat bites yielded a median of 5 bacterial isolates per culture (range, 0 to 16) at the reference laboratory. Significantly more isolates grew at the reference laboratory than at the local laboratories (median, 1; range, 0 to 5; P<0.001). Aerobes and anaerobes were isolated from 56 percent of the wounds, aerobes alone from 36 percent, and anaerobes alone from 1 percent; 7 percent of cultures had no growth. Pasteurella species were the most frequent isolates from both dog bites (50 percent) and cat bites (75 percent). Pasteurella canis was the most common isolate of dog bites, and Past. multocida subspecies multocida and septica were the most common isolates of cat bites. Other common aerobes included streptococci, staphylococci, moraxella, and neisseria. Common anaerobes included fusobacterium, bacteroides, porphyromonas, and prevotella. Isolates not previously identified as human pathogens included Reimerella anatipestifer from two cat bites and Bacteroides tectum, Prevotella heparinolytica, and several porphyromonas species from dog and cat bites. Erysipelothrix rhusiopathiae was isolated from two cat bites. Patients were most often treated with a combination of a beta-lactam antibiotic and a beta-lactamase inhibitor, which, on the basis of the microbiologic findings, was appropriate therapy. CONCLUSIONS: Infected dog and cat bites have a complex microbiologic mix that usually includes pasteurella species but may also include many other organisms not routinely identified by clinical microbiology laboratories and not previously recognized as bite-wound pathogens.

Adolescent↗

Abnormalities of lymphatic drainage in lower extremities: a lymphoscintigraphic study.

Chronic lower-leg edema in patients with venous disorders was studied by means of lymphoscintigraphy. Lymphatic patterns of flow were evaluated prospectively in 26 patients with technetium 99m antimony trisulfide colloid injected subcutaneously in the interdigital web spaces on the feet. Most patients in this study had postphlebitic syndrome, and all of these patients had abnormal lymphoscintigraphic flow patterns. Nine had evidence of lymphatic obstruction, and one had an enhanced flow pattern. Three patients had veins used for distal arterial bypass, and all these veins showed decreased lymphatic flow. Two patients with Klippel-Trenaunay syndrome (congenital varicose veins associated with limb elongation, a capillary nevus, and an abnormal deep venous system) had obstruction to lymphatic flow, and two others had normal and enhanced patterns. Normal studies were seen in four of five patients who had veins used for coronary artery bypass grafting. The finding of decreased lymphatic flow in patients appears to be the result of the length of time from an episode of deep venous thrombosis, the occurrence and number of episodes of cellulitis and lymphangitis, and mobilization of the vein for use in distal arterial bypass surgery. This study shows that the edema attributed previously to primary venous disorders may have a significant lymphatic component. The degree of lymphatic obstruction can be determined by lymphoscintigraphy with technetium-labeled antimony trisulfide colloid.

Adult↗

Reduction of filaritic lymphoedema and elephantiasis by 5,6 benzo-alpha-pyrone (coumarin), and the effects of diethylcarbamazine (DEC).

Chronic filaritic lymphoedema and elephantiasis, in India, were treated orally with 5,6 benzo-alpha-pyrone (56 BaP; 1,2 benzo-alpha-pyrone; coumarin) in a double-blind, randomized, matched-group trial. Each group finally contained 40-55 patients. Patients were observed for about 2 years (ranging from 6 to 45 months, with 75% completing the 2 years). The 56 BaP slowly, but very significantly (P < 0.0001), reduced all grades of lymphoedema and elephantiasis. Two thirds of the oedema was lost by grade 2 over 2 years. Grades 3 to 5 were reduced by a fifty over that time. The greater the initial oedema, the greater was its rate of resolution. A slowly worsening condition thus became a slowly improving one. Slowness has its advantages: compression stockings, that are impractical in hot, wet or dirty conditions, are not necessary. The slowly remodelling fibrous tissue, while lessening in amount, is still able to hold the tissues together. The 56 BaP considerably improved many symptoms and complications, particularly bursting-pains, inflammation and ulcers. It is cheap and of very low toxicity. Diethylcarbamazine (DEC) was studied with and without 56 BaP. DEC alone gave some reduction of the oedema, but this was much smaller than that with 56 BaP. It considerably worsened the reductions by 56 BaP, while 56 Bap slightly improved those by DEC and reduced the fever caused by DEC. Together, they reduced feelings of swelling and bursting-pain, fungal infections, lymphangitis and lymphadenitis more than when used alone.

Adult↗

Primary cutaneous nocardiosis in 2 patients on immunosuppressants.

Two female cases of primary cutaneous nocardiosis due to Nocardia brasiliensis are described. The first was associated with polymyositis and the second with chronic immune thrombocytopenic purpura. Both patients had received corticosteroids. In both cases the responsible actinomycetes were sensitive to trimethoprim/sulfamethoxazole. This drug was administered to both patients with excellent results. Treatment was continued for 3 months to prevent recurrence, a common consequence of short-term therapy. N. brasiliensis should be included in the differential diagnosis of any case of nodular lymphangitis, especially in immunocompromized patients.

Anti-Bacterial Agents↗

Rapid improvement of human orf (ecthyma contagiosum) with topical imiquimod cream: report of four complicated cases.

Orf is a zoonosis caused by an epitheliotropic DNA parapox virus. Human orf is a generally benign, self-limiting condition that usually regresses in 6-8 weeks without specific treatment. However, it may be accompanied by local symptoms including pain, pruritus, lymphangitis and axillary adenitis, or less frequently by systemic symptoms such as fever or malaise. Furthermore, it may be complicated by erythema multiforme, Stevens-Johnson syndrome, erysipelas, generalized mucocutaneous eruption, toxic erythema, eyelid oedema and giant, persistent or recurrent lesions in immunocompromised patients. Imiquimod, a potent topical immune response modifier, enhances both the innate and acquired immunity by stimulation of immune system cells resulting in local antiviral, antitumour and immunoregulatory activity. We present, for the first time, four complicated cases of orf successfully treated by topical imiquimod resulting in rapid regression of both orf and associated lesions. Two of the cases were complicated with erythema multiforme, one with recurrent eyelid oedema, and another had giant orf associated with axillary lymphadenitis. We suggest that topical imiquimod may be an effective and safe therapy for complicated orf cases.

Adjuvants, Immunologic↗

The immunodeficient scid mouse as a model for human lymphatic filariasis.

The C.B.-17-scid/scid mouse (hereafter referred to as the scid mouse) is homozygous for a recessive mutation at a locus that influences the assembly of intact immunoglobulin and T cell receptor genes. Therefore, scid mice cannot generate functional B or T lymphocytes, are profoundly immunodeficient, and have been reported to be receptive to reconstitution with human immune cells. In the present study, we injected scid mice with infective larvae of the human filarial parasite Brugia malayi. Within 6-10 wk after subcutaneous injection of infective L3 larvae, both male and female worms were observed in various stages of development in 90% of the mice. In animals tested 8 weeks or more after infection, microfilariae were detected in the blood or peritoneal cavity of 52% of the mice examined. Adult worms were observed in the lymphatics of the infected scid mice, where their presence was associated with lymphangitis and lymphangiectasia. These results suggest that the scid mouse model of lymphatic filariasis may be important in investigation of the interaction of the murine, and possibly the human, immune system with the lymphatic filarial parasite.

Animals↗

Hepatic tumors of long duration with eventual metastases. Two cases of leiomyosarcomatosis possibly arising from hamartomas of liver.

The cases of two patients who had hepatic tumors of long duration interpreted as hamartomas in whom, after many years, widespread metastases of malignant smooth muscle cells developed in a pattern of "carcinomatous lymphangitis" in the lungs are described. In one of the cases calcification of the hepatic nodules was prominent. The smooth muscle origin of the malignant cells was established only on electron microscopic examination. These cases appear similar to others variously reported as mixed tumors, hepatic cell carcinomas, and mesotheliomas.

Chronic Disease↗

Clusters of invasive group A streptococcal infections in family, hospital, and nursing home settings.

The spread of group A streptococcal infection to close contacts of infected persons is well recognized. With the resurgence of invasive group A streptococcal infections, there is an increased potential for clusters of patients with invasive disease. We reviewed data collected since December 1988 at the Centers for Disease Control (Atlanta) to identify clusters of infection in which one or more patients had invasive disease. Twelve family clusters were identified. Infection in index cases included the toxic shock-like syndrome and septicemia. Infection in family contacts included invasive infections, pharyngitis, or asymptomatic carriage. Most invasive disease occurred in adults, while the majority of noninvasive infections were in children. Five nosocomial clusters with spread of infection from patients to hospital personnel were documented. All index patients had the toxic shock-like syndrome; secondary infections included the toxic shock-like syndrome, pneumonia, bullous cellulitis, lymphangitis, and pharyngitis. Clusters of invasive infections also were identified in five nursing homes. Pneumonia, cutaneous infections, and the toxic shock-like syndrome occurred most commonly. Clustering by nursing home unit occurred in three outbreaks. In hospitals and nursing homes, improved infection control will likely decrease secondary spread; in families, spread of disease may be prevented by identifying and treating those harboring the organism or by chemoprophylaxis. Studies that characterize the rate of secondary infection are needed before definitive recommendations can be made.

Adult↗

Selective primary health care: strategies for the control of disease in the developing world. VII. Filariasis.

At least 250 million people throughout the world are infected with filariae, and the number of such persons is increasing. Three species infect humans: Wuchereria bancrofti, Brugia malayi, and Brugia timori. The peak of microfilarial density in the blood usually occurs nocturnally. Transmission of filariasis is remarkably inefficient. In an endemic area, approximately 100,000 mosquito bites yearly are required for production of each new case of microfilaremia. Only a small proportion of those infected suffer any ill effects from these worms. Clinical filariasis can present with acute inflammation such as lymphangitis and lymphadenitis and with chronic lymphatic obstruction such as hydrocele and lymphedema of the limbs. Measures available for potential control include the widespread usage of mosquito nets, vector control, and chemotherapy with diethylcarbamazine. Unfortunately, the efficacy of the first of these is untested and the latter two are inadequate. More research is required on vector control, assessment of new drugs, and the development of vaccines.

Adolescent↗

In Wuchereria bancrofti filariasis, asymptomatic microfilaraemia does not progress to amicrofilaraemic lymphatic disease.

BACKGROUND: In lymphatic filariasis due to Wuchereria bancrofti infections, the relationship between the natural course of infection and development of clinical disease remains controversial. The two hypotheses that are widely considered are (1) microfilaraemia represents an early stage of infection which progresses to amicrofilaraemic clinical disease and (2) microfilaraemia and clinical disease are two sequentially unrelated independent entities of the filarial infection and disease. Aim To determine whether microfilaraemic individuals develop lymphatic disease. METHODS: The study was conducted in Sri Lanka during the period 1982 to 1998. There were two components, firstly a cross-sectional study and then a longitudinal study. Microfilaraemia was determined by microscopic examination of night blood films. Microfilaraemia associated anti-filarial antibodies were determined by ELISA. Clinical examinations were performed to determine if the test subjects had evidence of acute and chronic lymphoedema. RESULTS: Two major observations were made. First, the incidence and development of adenolymphangitis and lymphoedema in microfilaraemic individuals were very rare and these subjects maintained asymptomatic microfilaraemic status for very long periods of time. Second, in contrast to microfilaraemic subjects, the incidence and development of lymphangitis and lymphoedema were significantly higher in amicrofilaraemic anti-filarial antibody-positive subjects. CONCLUSION: Microfilaraemia does not represent a precondition to development of clinical disease (except male genital involvement).

Adolescent↗