Coryneform Bacteria in Granulomatous Lobular Mastitis: Morphological Diagnosis in Breast Biopsies

2018 ◽  
Vol 27 (4) ◽  
pp. 380-386 ◽  
Author(s):  
David Oddó ◽  
Angeles Stefanelli ◽  
Alejandra Villarroel ◽  
Gonzalo P. Méndez
Keyword(s):  
Molecular Biology ◽  
Rare Disease ◽  
Gold Standard ◽  
Morphological Characteristics ◽  
Coryneform Bacteria ◽  
Morphological Diagnosis ◽  
Hematoxylin And Eosin ◽  
Hematoxylin And Eosin Stain ◽  
Tissue Quantification ◽  
Infectious Etiology

Granulomatous lobular mastitis is a rare disease whose origin is still unknown and shows an increase in its frequency. Morphological, microbiological, and molecular biology studies have linked this disease to lipophilic and fastidious corynebacteria, suggesting its possible infectious etiology. This series describes and reviews in detail the distinctive morphological characteristics of the bacteria present in the granulomas of this disease, the usefulness of histochemical techniques for their identification, and our proposal for a tissue quantification score for the bacteria. The MacCallum-Goodpasture method of Gram’s stain turned out to be the gold standard for examination, but we also highlight the efficiency of hematoxylin and eosin stain when it is exhaustively examined as well as the Grocott stain to evaluate the bacterial pleomorphism method, which is often underutilized.

Histologic Evaluation of Osseous Regeneration Following Combination Therapy With Platelet-Rich Plasma and Bio-Oss in a Rat Calvarial Critical-Size Defect Model

2015 ◽  
Vol 41 (5) ◽  
pp. 543-549 ◽  
Author(s):  
Philip J. DeNicolo ◽  
M. Kelly Guyton ◽  
Michael F. Cuenin ◽  
Steven D. Hokett ◽  
Mohamed Sharawy ◽  
...  
Keyword(s):  
Bone Regeneration ◽  
Bone Growth ◽  
Critical Size ◽  
Close Contact ◽  
Platelet Rich Plasma ◽  
Critical Size Defect ◽  
Histologic Evaluation ◽  
Hematoxylin And Eosin ◽  
Hematoxylin And Eosin Stain ◽  
Osseous Regeneration

Platelet-rich plasma (PRP) is an autogenous source of growth factors shown to facilitate human bone growth. Bio-Oss, an osteoconductive xenograft, is used clinically to regenerate periodontal defects, restore dental alveolar ridges, and facilitate sinus-lift procedures. The purpose of this study was to analyze whether a combination of PRP and Bio-Oss would enhance bone regeneration better than either material alone. PRP and/or Bio-Oss were administered in an 8-mm critical-size defect (CSD) rat calvarial model of bone defect between 2 polytetrafluoroethylene membranes to prevent soft tissue incursion. Eight weeks after the induction of the CSD, histologic sections were stained with hematoxylin and eosin stain and analyzed via light microscopy. Qualitative analyses revealed new bone regeneration in all 4 groups. The Bio-Oss and PRP plus Bio-Oss groups demonstrated greater areas of closure in the defects than the control or PRP-only groups because of the space-maintaining ability of Bio-Oss. The groups grafted with Bio-Oss showed close contact with new bone growth throughout the defects, suggesting a stronger graft. The use of PRP alone or in combination with Bio-Oss, however, did not appear to enhance osseous regeneration at 8 weeks. Areas grafted with Bio-Oss demonstrated greater space-maintaining capacity than controls, and PRP was an effective vehicle for placement of the Bio-Oss. However, at 8 weeks this study was unable to demonstrate a significant advantage of using PRP plus Bio-Oss over using Bio-Oss alone.

scholarly journals Role of S-100 Immunostain as An Auxiliary Diagnostic Aid in Leprosy

2017 ◽  
Vol 56 (205) ◽  
pp. 141-144 ◽  
Author(s):  
Ramesh Dhakhwa ◽  
Sneh Acharya ◽  
Sailesh Pradhan ◽  
Sanju Babu Shrestha ◽  
Tomoo Itoh
Keyword(s):  
Erythema Nodosum ◽  
Lupus Vulgaris ◽  
Common Pattern ◽  
Tissue Sections ◽  
Histopathologic Diagnosis ◽  
S 100 ◽  
Skin Biopsies ◽  
Hematoxylin And Eosin ◽  
Hematoxylin And Eosin Stain

Introduction: Histopathologic diagnosis of leprosy is difficult when Bacillary Index (BI) is zero and neural involvement are not easily identifiable on routine Hematoxylin and Eosin stain. This study was undertaken to study the role of S-100 immunostaining in demonstrating different patterns of nerve involvement in various types of leprosy. Methods: Thirty one skin biopsies with clinico-histopathologic diagnoses of leprosy over a period of two years were included in the study. Ten cases of non-lepromatous granulomatous dermatoses (including eight cases of lupus vulgaris and two cases of erythema nodosum) were used as controls. Tissue sections from all cases and controls were stained with Hematoxylin and Eosin (H&E) stain, Fite stain and S-100 immunostain. The H&E stained slides were used to study the histopathological features, Fite stained slides for Bacillary Index and S-100 for nerve changes. Results: Neural changes could be demonstrated in the entire spectrum of leprosy using S-100 immunostaining. The most common pattern of nerve destruction in the tuberculoid spectrum was fragmented and infiltrated whereas lepromatous spectrum showed mostly fragmented nerve twigs. Intact nerves were not detected in any of the leprosy cases. Conclusions:  S-100 immunostain is a useful auxiliary aid to the routine  H&E stain in the diagnosis of leprosy especially tuberculoid spectrum and intermediate leprosy.  Keywords: bacillary index; leprosy; S-100 immunostain.

scholarly journals Mucormycosis of the hard palate masquerading as carcinoma

2012 ◽  
Vol 2 (1) ◽  
pp. 28 ◽  
Author(s):  
Bhari Sharanesha Manjunatha ◽  
Nagarajappa Das ◽  
Rakesh V. Sutariya ◽  
Tanveer Ahmed
Keyword(s):  
Clinical Presentation ◽  
Fungal Infections ◽  
Survival Rates ◽  
Positive Culture ◽  
Staining Technique ◽  
Necrotic Bone ◽  
Chronic Ulcers ◽  
Hematoxylin And Eosin ◽  
Clinical Differential Diagnosis ◽  
Hematoxylin And Eosin Stain

A growing number of medically compromised patients are encountered by dentists in their practices. Opportunistic fungal infections such as mucormycosis usually occur in immunocompromised patients but can infect healthy individuals as well. Mucormycosis is an acute opportunistic, uncommon, frequently fatal fungal infection, caused by a saprophytic fungus that belongs to the class of phycomycetes. Among the clinical differential diagnosis we can consider squamous cell carcinoma. Such cases present as chronic ulcers with raised margins causing exposure of underlying bone. There is a close histopathological resemblance between mucormycosis and aspergillosis. Microscopically, aspergillosis has septate branching hyphae, which can be distinguished from mucormycotic hyphae by a smaller width and prominent acute angulations of branching hyphae. A definitive diagnosis of mucormycosis can be made by tissue biopsy that identifies the characteristic hyphae, by positive culture or both. The culture of diseased tissue may be negative and histopathologic examination is essential for early diagnosis. Mucormycosis was long regarded as a fatal infection with poor prognosis. However with early medical and surgical management survival rates are now thought to exceed 80%. In the present case, the fungus was identified by hematoxylin and eosin stain and confirmed by Grocott’s silver methenamine special staining technique. Removal of the necrotic bone, which acted as a nidus of infection, was done. Post-operatively patient was advised an obturator to prevent oronasal regurgitation. Since mucormycosis occurs infrequently, it may pose a diagnostic and therapeutic dilemma for those who are not familiar with its clinical presentation.

scholarly journals Ganglion Cytology: A Novel Rapid Method for the Diagnosis of Equine Dysautonomia

2018 ◽  
Vol 56 (2) ◽  
pp. 244-247
Author(s):  
Chiara Piccinelli ◽  
Rachel Jago ◽  
Elspeth Milne
Keyword(s):  
Gold Standard ◽  
Neuronal Degeneration ◽  
Final Diagnosis ◽  
Rapid Diagnosis ◽  
Cytological Examination ◽  
Postmortem Diagnosis ◽  
Grass Sickness ◽  
Cervical Ganglion ◽  
Hematoxylin And Eosin ◽  
Cranial Cervical Ganglion

Equine dysautonomia (grass sickness) is characterized by autonomic neuronal degeneration and is often fatal. As outbreaks occur, rapid diagnosis is essential but confirmation currently requires histological examination. This study evaluated diagnostic accuracy of cytological examination of cranial cervical ganglion (CCG) scrapings for dysautonomia diagnosis. CCG smears from 20 controls and 16 dysautonomia cases were stained with May-Grünwald Giemsa (MGG), hematoxylin and eosin (HE), and cresyl fast violet (CFV), with HE-stained histological sections of CCG as gold standard for diagnosis. Examining all 3 stains together, the sensitivity and specificity were 100%. Occasional individual smears (4/107, 3.7%) were nondiagnostic due to low cellularity, and in a few individual smears the final diagnosis was correct but more tentative (CFV: 5/33 [15.1%], HE: 2/34 [5.9%], and MGG: 4/36 [11.1%]), due to low cellularity or suboptimal cell morphology. CCG cytology was considered reliable for rapid postmortem diagnosis of equine dysautonomia, particularly using MGG.

Crooked Calf Disease: A Histological and Histochemical Examination of Eight Affected Calves

1986 ◽  
Vol 23 (6) ◽  
pp. 734-740 ◽  
Author(s):  
L. C. Abbott ◽  
R. H. Finnell ◽  
G. F. Chernoff ◽  
S. M. Parish ◽  
C. C. Gay
Keyword(s):  
Congenital Anomalies ◽  
Adenosine Triphosphatase ◽  
Normal Muscle ◽  
Hematoxylin And Eosin ◽  
Hematoxylin And Eosin Stain ◽  
Histochemical Examination

Macroscopic, histopathologic, and histochemical investigations were made on a group of eight neonatal Angus × Hereford calves, selected from an ongoing outbreak of crooked calf disease among calving heifers. Arthrogryposis of the forelimbs was seen to varying degrees in all eight animals, and torticollis was present in six calves. Histopathology, using hematoxylin and eosin stain, did not reveal any striking or consistent lesion in the affected animals; the majority of the tissues sampled were normal. Muscle samples were processed for adenosine triphosphatase (ATPase) and NADH-tetrazolium reductase (NADH-tr) histochemistry, and the data suggest that a primary myopathy is not responsible for the congenital anomalies in the affected calves.

scholarly journals Histopathological study of endometrium in abnormal uterine bleeding

2012 ◽  
Vol 2 (4) ◽  
pp. 297-300 ◽  
Author(s):  
S Bhatta ◽  
AK Sinha
Keyword(s):  
Histopathological Examination ◽  
Abnormal Uterine Bleeding ◽  
Uterine Bleeding ◽  
Common Finding ◽  
Histopathological Study ◽  
Endometrial Sampling ◽  
Proliferative Endometrium ◽  
Malignant Lesions ◽  
Hematoxylin And Eosin ◽  
Hematoxylin And Eosin Stain

Background: Histopathological evaluation of endometrial samples is essential in the workup of abnormal uterine bleeding. This study was carried out to evaluate patterns of endometrial histological findings in women with abnormal uterine bleeding and to correlate histopathological findings with clinical features.Materials and Methods: One hundred and twenty two patients with diagnosis of abnormal uterine bleeding underwent endometrial sampling. The slides stained with Hematoxylin and Eosin stain were studied.Results: The predominant endometrial histopathological finding was proliferative endometrium 32 cases (26.23%) followed by simple hyperplasia without atypia 22 cases (18.03%). Malignant lesions were more common in patients more than 40 years of age and comprised of 7 cases (5.74%) of all cases. Atrophic endometrium was most common finding in postmenopausal bleeding 8 cases (28.6%) followed by endometrial carcinoma 5 cases (17.9%).Conclusion: Histopathological examination of endometrium should be done generously in women presenting with abnormal uterine bleeding especially after the age of 40 years to rule out malignant pathology.Journal of Pathology of Nepal (2012) Vol. 2, 297-300DOI: http://dx.doi.org/10.3126/jpn.v2i4.6882

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