Evaluation of canine and feline tumors in Morocco: Results of a prospective observational study of 250 cases (2020-2023).

This work aimed to evaluate the histologic tumor types and patient characteristics of canine and feline neoplasias in Morocco. In a prospective, observational study, 250 tumor samples were collected from veterinary clinics in Morocco. For each case, breed, age, sex, neuter status, and tumor site and histotype were analyzed.

Epithelioid sarcoma of the pretragus: a rare pediatric entity with an unusual site.

Epithelioid sarcoma (ES) is a rare soft tissue tumor that is commonly misdiagnosed. It is a mesenchymal tumor that shows both mesenchymal and epithelial features. It tends to occur in the distal upper extremity in children and young adults but may appear in any location and any age group.

Invasive lobular carcinoma of the male breast: A case report.

Invasive lobular carcinoma (ILC) is a rare type of male breast cancer, representing about 1% of cases. It often presents with a palpable mass and sometimes nipple changes, but is usually diagnosed late. ILC is more likely to be estrogen and progesterone receptor-positive and usually HER-2 negative.

Massive cellular angiofibroma of the vulva: a case report.

Cellular angiofibroma is a rare benign mesenchymal tumor, typically occurring in the vulvar region of middle-aged women. This report highlights the importance of histological analysis in diagnosing this uncommon condition and emphasizes its benign nature and straightforward management. We present a case of a 58-year-old North African woman who had a large, well-defined mass in the left labia majora, which had been evolving over 2 years.

Canine transmissible venereal tumor in Morocco: Clinical and pathological findings in 64 dogs-insights from a descriptive epidemiological study (2020-2023).

Background: Canine transmissible venereal tumor (CTVT) is a widely spread, contagious neoplasm commonly found in dogs. Mostly affects the external genitalia, however, it may also exhibit unusual clinical presentations.

Aim: To describe the epidemiology, clinical appearance, cytologic and histopathologic features of dogs with TVT in Morocco.

Primary Ewing sarcoma of the kidney: a rare entity with diagnostic challenges.

Ewing sarcoma is a very rare tumour with aggressive behaviour and a poor prognosis. It tends to metastasize rapidly. Renal Ewing sarcoma is extremely rare, and only 48 cases have been reported in the literature.

Angiomyofibroblastoma of the vulva: A case report and review of the literature.

Angiomyofibroblastoma (AMFB) represents a rare, benign mesenchymal tumor with a predilection for the vulvovaginal region. It is usually diagnosed in middle-aged women. Histopathology and immunohistochemical study remain the key to diagnosis.

A Sertoli-Leydig ovarian tumor presenting as ovarian torsion: A case report.

Torsion occurs as a complication in 10% of cases of ovarian tumors. It predominantly occurs in benign ones, while malignant tumors are less prone to torsion. Sertoli-Leydig cell tumors are highly unusual sex cord-stromal tumors of the ovary, accounting for less than 0.

A Dental Extraction Revealing a Multisystem Burkitt's Lymphoma: A Case Report.

Burkitt's lymphoma is rare but highly aggressive and very fast-growing B-cell non-Hodgkin's lymphoma (NHL). It can affect any organ such as the central nervous system, jaw, intestines, kidneys, ovaries, and other organs. It results from the malignant evolution and proliferation of B-type lymphoid cells.

Bilateral Nephroblastomatosis With a Unilateral Wilms Tumor: A Case Report Highlighting Imaging Characteristics.

Nephrogenic rests (NRs) are foci of embryonic nephrogenic cells that persist beyond the 36th week of gestation. They are precursor lesions of Wilms tumor and are found incidentally in approximately 1% of infants. The term nephroblastomatosis (NBS) is utilized when nephrogenic rests extensively or multifocally affect the kidneys.

A rare case of renal tumor in children: Clear cell sarcoma with an unusual presentation.

Clear cell sarcoma of the kidney is the most frequently misdiagnosed renal tumor in children. We report the case of a 6-year-old boy with clear cell sarcoma of the kidney with an unusual presentation, including a primary tumor of the left kidney with metastasis in the homolateral psoas muscle. The renal tumor was revealed by abdominal mass without hematuria.

Mesenchymal Hamartoma With Elevated Alpha-Fetoprotein: A Diagnostic Pitfall.

Mesenchymal hamartoma (MH) is a benign liver tumor accounting for 3% to 8% of all liver tumors in children, commonly manifesting before 3 years of life. Distinguishing MH from hepatoblastoma and other liver tumors relies on imaging and alpha-fetoprotein (which is usually within normal range in MH), before histologic examination. We report a case of a hepatic MH associated with elevated alpha-fetoprotein, leading to a misdiagnosis of hepatoblastoma and the administration of chemotherapy.

Pathophysiological, immunogenetic, anatomopathological profile of thrombophilia in pregnancy.

Thrombophilic states have been associated with early and/or late pregnancy loss and possibly other severe obstetrical complications. Pregnancy-induced hypercoagulability, increased stasis, and the consequences of inherited and acquired thrombophilia are just a few of the factors that contribute to the development of thrombosis in pregnancy. In this review, we illustrate the impact that these factors have on the development of thrombophilia during pregnancy.

Nephroblastoma of the Big Child, a Rare Entity: About a Case.

Nephroblastoma is a renal blast tumor, the most common malignant renal tumor in children between 1 and 5 years of age. The average age of onset is 3.5 years, rarely occurring in children over 10 years of age.

Hyperphosphatemic familial tumoral calcinosis mimicking a cystic hemo-lymphangioma on MRI.

A tumoral calcinosis is a rare benign pathology characterized by calcium deposits (calcium phosphate crystals) in the periarticular soft tissues, giving a truly pseudotumor appearance. The same patients with tumoral calcinosis may have manifestation of hyperostosis hyperphosphatemia syndrome. The association is called Hyperphosphatemic familial tumoral calcinosis which is the case with our patient.

Non Hodgkin Lymphoma Among Children: Pathological Aspects and Diagnostic Challenges.

Non-Hodgkin lymphoma (NHL) are common malignancies in children. Available data on clinico-pathological aspects of pediatric NHL in developping countries are limited and diagnostic approach appears more delicate with absence of molecular studies. The objectives of our study are: analyzing the pathological spectrum of NHL among children and highlighting challenges in the diagnosis including: limited biopsic material; unususal subtyptes, age group, or localization.

Primitive myxoid mesenchymal tumor of infancy: Case report and review of the literature.

Primitive myxoid mesenchymal tumor of infancy (PMMTI) is an extremely rare soft tissue tumor with only a few cases. Herein, we report a case of 5-months-old girl presenting with a soft tissue mass on the sole of the left foot that recurred 2months after a first resection. The Doppler ultrasound imaging showed abundant blood flow in the tumor.

Chondromyxoid Fibroma-Like Osteosarcoma in a 13 Years Old Girl: A Report of a New Case.

Osteosarcoma (OS) is the most common primary non hematopoietic malignant tumor of bone with a strict histologic definition: the presence of unequivocal osteoid produced by neoplastic cells. Rare variants displaying low-grade histological features have been described; among which chondromyxoid fibroma-like (CMF-OS) is the rarest. However, despite its bland morphology; CMF-like OS has an aggressive clinical behavior and a poor prognosis.

Congenital hepatic fibrosis: case report and review of literature.

Congenital hepatic fibrosis (CHF) is a rare autosomal recessive disease derived from biliary dysgenesis secondary to ductal plate malformation; it often coexists with Caroli's disease, von Meyenburg complexes, autosomal dominant polycystic kidney disease (ADPKD), and autosomal recessive polycystic kidney disease (ARPKD). Although CHF was first named and described in detail by Kerr et al. in 1961.

Primary mature adrenal teratoma in infant.

Teratomas are neoplasms of the embryonic tissues that typically arise in the gonadal and sacrococcygeal regions. Primary adrenal teratoma are extremely rare and only few cases were published in literature. Teratomas contain more than one embryonic germ cell layer, mostly elements derived from ectoderm and least frequently from endoderm.

[Histopathological lesions of the placenta associated with severe intrauterine growth retardation: about a clinical case].

The examination of the placenta is part of the assessment of intrauterine growth retardation (IUGR). Its interest lies in retardation etiology research and in maternal-fetal consequences which can arise from it as well as in the implementation of preventive strategies for subsequent pregnancies in patients with recurrent diseases. We conducted a study of patients with severe IUGR monitored in the Department of Neonatology of the Ibn Sina University Hospital in Rabat in order to identify possible anatomopathological lesions in the placenta.

Diagnostic difficulties of primary angiosarcoma of the breast: a case report.

Background: Angiosarcoma of the breast is a rare tumor, which may be primary or secondary to breast surgery or irradiation. It is characterized by polymorphic and nonspecific clinical and radiological features. A pathologist plays a key role in positive and differential diagnosis and in establishing the prognosis: only a histological examination can confirm the diagnosis, and the histologic grade is the most important prognostic factor.

Intracardiac Teratoma in an Infant: Report of a New Case and Literature Review.

Primitive intracardiac tumours are rare, especially in childhood, and are often discovered on autopsy. The intracardiac teratoma is the rarest intracardiac tumours of childhood. Herein, we report the case of an 11-month-old infant, which featured recurrent bronchoalveolitis since the age of 3 months, with a thoracic deformation.