ABSTRACT: Mast cell tumors are one of the most common neoplasia in dogs and cytopathology and/or histopathology examinations used for diagnosis. Histologic grading is considered gold standard test to predict prognosis this neoplasia. However, studies have been conducted using cytological system provide similar information a faster, less invasive, more accessible way. This study aimed investigat...

Calcifying odontogenic cyst (COC) is an odontogenic cyst with accumulation of ghost cells that has central and peripheral subsets. Here, we present an 11-year-old male patient with an intraoral swelling on the left posterior mandibular ridge interfering with eruption of the second molar. Histopathologic examination revealed a cystic lesion lined by ameloblast-like epithelium in the basal layer ...

An 81-year-old man had a keratotic eyelid lesions for 20 years. He eventually sought treatment by ophthalmic plastic surgery. Clinically, the lesion resembled a keratoacanthoma. Findings from histologic examination of the excision biopsy specimen showed a squamous cell carcinoma. The lesion was completely excised. This case demonstrates the difficulty in making a correct clinical diagnosis of a...

BACKGROUND Cutaneous T-cell lymphoma (CTCL) represents a spectrum of diseases composed of malignant T lymphocytes. The most common type is mycosis fungoides (MF). An accurate diagnosis of early MF may be difficult because of the varied clinical and histologic expressions of the disease. METHODS The authors review the epidemiology, possible risk factors, clinical manifestations, diagnostic tec...

We evaluated the usefulness of multiparameter flow cytometry with cluster analysis in the diagnosis of a series of 100 well-characterized small B-cell lymphomas (SBCLs). The histologic diagnoses in the 100 cases were follicular lymphoma (FL) in 58, marginal zone lymphoma (MZL) in 17, small lymphocytic lymphoma in 15, and mantle cell lymphoma (MCL) in 10. Of the 58 FLs, 57 were CD10 positive (98...

Gastric-type extremely well-differentiated adenocarcinoma (EWDA) is a rare type of gastric adenocarcinoma characterized by infiltration of well-formed mucinous glands with little or no nuclear atypia, which resemble foveolar epithelium or pyloric glands. Because of its high degree of differentiation, preoperative biopsy diagnosis of gastric-type EWDA is very difficult. We encountered a case of ...

Histologic and immunohistochemical preparation of pathologic fluids containing cellular material is difficult, because the techniques are limited by the amount of cellular material. Similar problems limit the preparation of vitrectomized material. Cytopreparatory techniques, including millipore filter and celloidin bag cell block, have been introduced since 1980 for diagnostic vitrectomies. The...

All hospital records of Israeli residents, diagnosed during the 5 years 1960-1964 as having Hodgkin’s disease, were personally reviewed. Subsequently, the patients were divided into three diagnostic categories, according to the degree of pathological confirmation: a ) “definite”-with an unequivocal histological confirmation, ( 186 cases). b) “probable”-with a histologic diagnosis compatible wit...

osteosarcoma (os) is a malignant mesenchymal tumor, which rarely occurs in the maxilla. although variable histologic and radiographic features of os have been reported previously, in the majority of the cases painful swelling of the jaw is mentioned as the first clinical presentation. furthermore, early diagnosis and wide surgical resection of the tumor are the most important determinant factor...

Report of aCase |Awomanonher50spresentedwitha6-month historyofmultiple, firm, reddish, pruritic andexcoriatedpapulesandnodulesextensivelydistributedontheback (Figure 1). The patient was otherwise healthy, with a medical history of only fibromyalgia, andbothclinical examinationandbloodtest findings were unremarkable. Histologic examination of 2 punch biopsy specimens taken from the nodules on th...