ABSTRACT
Quatro populações de Baccharis trimera (Asteraceae) foram analisadas no município de Viçosa-MG quanto ao ciclo fenológico. As observações foram realizadas mensalmente de março de 2010 a março de 2011 acompanhando a fenofase vegetativa e reprodutiva em espécimes ocorrentes em diferentes ambientes - barranco, mata de eucaliptos, mata secundária e pastagem. Os indivíduos do barranco e da pastagem floresceram durante maio, junho e julho e frutificaram entre agosto e setembro. As plantas em sub-bosque de mata secundária não apresentaram a fenofase reprodutiva. A floração e a frutificação das plantas na mata de eucalipto ocorreram após um mês em relação às outras populações. O conhecimento preliminar do ciclo fenológico da espécie contribui para a estratégia de seu manejo sustentável e emprego medicinal.
Four populations of Baccharistrimera (Asteraceae) were analyzedin Viçosa-MG in relation to thephenological cycle. The observations were taken monthly from March 2010 to March 2011 following the vegetative and reproductive phenology inspecimens occurringin different environments-ravine, forest of eucalyptus trees, secondary forest and pasture. Individuals from the ravine and pasture bloomed during May, June and July and bore fruitin August and September. The plants of the secondary forestunder story showed no reproductive phenology. Flowering and fruiting of plants in the forest of eucalyptus trees occurred after one month compared to other populations. Preliminary knowledge of the phenological cycle of the species contributes toits sustainable management strategy and medicinal uses.
Subject(s)
Baccharis/metabolism , Phenolic Compounds/analysis , Plants, Medicinal/classificationABSTRACT
BACKGROUND: Whereas a tubular adenoma is a unique finding within the paranasal sinuses, intestinal adenocarcinomas are especially in patients with long-term exposure to wood dust, common tumours in this location. CASE: In a 65 year old joiner endonasal sinus surgery performed to treat suspected chronic pansinusitis brought up by chance the histological finding of a tubular adenoma. As the patient at first refused surgical revision, but magnetic resonance imaging during follow-up revealed evidence for a space occupying lesion affecting the ethmoid and sphenoid sinuses revision surgery took place one year later. Histopathological evaluation now found a papillary adenocarcinoma. Clinical follow-up and magnetic resonance imaging one year after second surgery found no evidence for tumour recurrence. CONCLUSIONS: Progression of a tubular adenoma to an adenocarcinoma like in the adenoma-carcinoma model well known for colorectal carcinomas has so far not been observed within the paranasal sinuses. But, an adenocarcinoma already present at the time of first surgery can not be ruled out completely in the presented case as histopathological evaluation may have failed to detect an adenocarcinoma in the available specimens after first surgery. Either malignant transformation of a tubular adenoma had occurred or proof of an adenocarcinoma has failed with misdiagnosis of a tubular adenoma. A tubular adenoma as well as an adenocarcinoma require complete resection and careful clinical and radiological follow-up to avoid adenocarcinoma development from a tubular adenoma or to detect an adenocarcinoma by histological evaluation of the whole specimen.
Subject(s)
Adenocarcinoma, Papillary/pathology , Adenoma/pathology , Cell Transformation, Neoplastic/pathology , Ethmoid Sinus/pathology , Paranasal Sinus Neoplasms/pathology , Sphenoid Sinus/pathology , Adenocarcinoma, Papillary/surgery , Adenoma/surgery , Aged , Disease Progression , Ethmoid Sinus/surgery , Follow-Up Studies , Humans , Magnetic Resonance Imaging , Male , Paranasal Sinus Neoplasms/surgery , Reoperation , Sphenoid Sinus/surgeryABSTRACT
BACKGROUND AND STUDY AIMS: The main complication associated with biliary stenting is stent occlusion. This study tested the hypothesis that bilioduodenal reflux may play a crucial role in stent clogging. PATIENTS AND METHODS: Plastic stents in 100 consecutive patients with various biliary disorders were investigated macroscopically and cytologically. RESULTS: In 37 patients with elective stent extraction, the only risk factor for stent occlusion was the duration of stenting. Plant material was found as a consequence of duodenobiliary reflux in 38 of the 89 stents with any stent content. In patients who had two stents, the stent content was identical in eight of 14 cases. CONCLUSIONS: In addition to other mechanisms of biliary stent occlusion, duodenobiliary reflux appears to play an important role. A stent design capable of at least partly preventing this type of reflux might be of clinical benefit.
Subject(s)
Bile Ducts/surgery , Bile Reflux/etiology , Cholestasis/etiology , Duodenal Obstruction/etiology , Duodenogastric Reflux/etiology , Duodenum/surgery , Plastics/adverse effects , Stents/adverse effects , Adult , Aged , Aged, 80 and over , Equipment Failure , Female , Humans , Male , Middle Aged , Risk FactorsABSTRACT
HISTORY AND ADMISSION FINDINGS: A 79-year-old local resident, presenting with abdominal pain, sweating and weight loss and suspected of having cancer of the pancreas was referred for diagnosis and treatment. Physical examination was negative except for pain on pressure over the right upper abdomen and the epigastrium. INVESTIGATIONS: Erythrocyte sedimentation rate was increased; as were the transaminases and cholestasis parameters. Ultrasonography and computed tomography of the abdomen revealed an echo-poor mass with cystic areas in the region of the head of the pancreas, as well as extra- and intrahepatic dilatation of the biliary tract. Endoscopic retrograde cholangiopancreatography failed to demonstrate a ductal pancreatic carcinoma. Biopsies of a macroscopically peculiar-looking duodenal ulcer demonstrated a noncaseous epithelioid granuloma. A fine-needle biopsy was performed for further diagnosis. DIAGNOSIS, TREATMENT AND COURSE: Histological examination of the needle biopsy revealed a caseous granuloma and acid-fast bacteria. The tuberculin test (GTI) was strongly positive (14-15 mm), indicating tuberculosis of the pancreas and duodenum. Multiple tuberculostatics rapidly improved the patient's symptoms, and the further course was without complications. CONCLUSION: Tuberculosis should be included in the differential diagnosis of consumptive disease with an atypical presentation, especially because treatment could well be curative.
Subject(s)
Duodenal Diseases/diagnosis , Pancreatic Diseases/diagnosis , Pancreatic Neoplasms/diagnosis , Tuberculosis, Gastrointestinal/diagnosis , Tuberculosis/diagnosis , Aged , Antitubercular Agents/therapeutic use , Biopsy, Needle , Cholangiopancreatography, Endoscopic Retrograde , Diagnosis, Differential , Duodenal Diseases/drug therapy , Female , Follow-Up Studies , Humans , Pancreas/pathology , Pancreatic Diseases/drug therapy , Radiography, Abdominal , Radiography, Thoracic , Time Factors , Tomography, X-Ray Computed , Tuberculin Test , Tuberculosis/drug therapy , Tuberculosis, Gastrointestinal/drug therapyABSTRACT
Progressive dyspnoea developed in a 37-year-old woman over a period of 2 months. A chest x-ray and echocardiography revealed a massive dilatation of the heart with thrombi in both ventricles. The endomyocardial biopsy was classified as myocarditis in two different departments of pathology. The patient developed thromboembolic events and an untreatable heart failure which led to the patient's death. The necropsy revealed a dilated 600-gram-heart and thrombi in both ventricles. On histological and immunohistological examination of the heart, the original diagnosis was corrected to catecholamine-induced dilated cardiomyopathy.
