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Case Reports in Pathology

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https://www.readbyqxmd.com/read/29670795/pulmonary-vasculitis-and-a-horseshoe-kidney-in-noonan-syndrome
#1
Surasak Puvabanditsin, Rosanna Abellar, Adaora Madubuko, Rajeev Mehta, Lauren Walzer
We report a term male neonate with congenital myeloproliferative disorder, thrombocytopenia, a horseshoe kidney, feeding difficulty secondary to dysphagia/foregut dysmotility, and respiratory failure. Prenatal molecular genetic analysis revealed a fetus carrying c.184T>G (p.Tyr62Asp) pathogenic variant in PTPN11 . The infant eventually succumbed to respiratory failure. Bacterial and viral cultures/studies were all no growth/negative. Pulmonary capillaritis and vasculitis were noted at autopsy. This report presents a new case of Noonan syndrome with unusual associated disorders and a review of the literature...
2018: Case Reports in Pathology
https://www.readbyqxmd.com/read/29670794/coexistence-of-cervical-leiomyosarcoma-and-gastric-type-adenocarcinoma-in-situ-with-extensive-extension-to-the-endometrium-and-fallopian-tube
#2
Ayako Ura, Kanako Ogura, Asumi Sakaguchi, Hiroko Onagi, Daiki Ogishima, Yayoi Sugimori, Kensuke Hamamura, Masaharu Fukunaga, Toshiharu Matsumoto
Cervical leiomyosarcoma is known to be rare from the previous reviews of a large number of malignant cervical tumors. The patient was a 66-year-old woman with irregular vaginal bleeding. She underwent modified radical hysterectomy and bilateral salpingooophorectomy. Histopathologically, we diagnosed the coexistence of uterine cervical leiomyosarcoma and cervical gastric-type adenocarcinoma in situ with endometrial lesions that had continuous and skip patterns and fallopian tubal lesions with a partial lesion...
2018: Case Reports in Pathology
https://www.readbyqxmd.com/read/29651357/respiratory-epithelial-orbital-cyst-a-case-report-and-literature-review
#3
Sally Al Abdulmohsen, Ayman Ayoubi, Sadeq Al-Dandan
A 44-year-old male with schizophrenia presented with progressive right proptosis for one year and conjunctivitis for two months. An orbital cyst was seen in the superotemporal region on computerized tomography and was surgically removed. There was no history or radiological signs of paranasal sinus disease or previous trauma. Histopathologic evaluation revealed a cyst lined with respiratory epithelium. Respiratory choristomatous cysts of the orbit are considered rare in both pediatric and adult patients. We review the literature of respiratory orbital cysts and conclude that they tend to present in adults and should be considered in the differential diagnoses of orbital cysts...
2018: Case Reports in Pathology
https://www.readbyqxmd.com/read/29651356/cerebellar-medulloblastoma-in-middle-to-late-adulthood
#4
Majid Aljoghaiman, Mahmoud S Taha, Marwah M Abdulkader
Medulloblastoma is a malignant brain tumor that is typically seen in children. It is classified as an embryonal tumor, classically located within the posterior fossa. When it involves the fourth ventricle, the patient commonly presents with signs and symptoms of raised intracranial pressure secondary to obstructive hydrocephalus. It is exceedingly rare for Medulloblastoma to occur in middle and late adulthood. In this paper, we present a case of a 51-year-old man who presented with a posterior fossa mass that was diagnosed later as Medulloblastoma...
2018: Case Reports in Pathology
https://www.readbyqxmd.com/read/29651355/cutaneous-adnexal-cylindroma-of-breast-epithelial-immunoreactivities-for-gata-3-mammaglobin-and-e-cadherin-do-not-equate-to-a-mammary-ductal-neoplasm
#5
A Halima, A M Pannunzio, E M Erstine, J S Ko, W F Bergfeld, R M Malaya, M B Frankel, B C Calhoun, C D Sturgis
Cylindromas are benign epithelial neoplasms derived from cutaneous eccrine adnexal structures. These tumors are most commonly encountered on the head, neck, and scalp of older women. In rare instances, solitary cylindromas may arise at other body sites. In the current case, a cylindroma of the skin of the breast was diagnosed by complete excision. Immunohistochemical studies confirmed the tumor cells to be immunoreactive with cytokeratin AE1/3, cytokeratin 5/6, cytokeratin 7, p63, and SOX10. The neoplastic cells were also noted to be immunoreactive with markers typically expected to be positive in ductal epithelium of the breast including GATA3, mammaglobin, and E-cadherin...
2018: Case Reports in Pathology
https://www.readbyqxmd.com/read/29581908/sarcomatoid-variant-of-urothelial-carcinoma-of-the-renal-pelvis-with-inferior-vena-cava-tumour-thrombus-a-case-report-and-literature-review
#6
Sameera Rashid, Mohammed Akhtar
Sarcomatoid variant of urothelial carcinoma (SVUC) of the renal pelvis is a rare entity. To the best of our knowledge, around 25 cases of this neoplasm have been reported in the literature to date, most of which were of high stage. The inferior vena cava tumour thrombus, which is a hallmark of renal cell carcinoma (RCC), may rarely be found in urothelial carcinoma of renal pelvis. In this report, a case of SVUC associated with tumour extension to inferior vena cava is documented. This association has been encountered in only one previously reported case...
2018: Case Reports in Pathology
https://www.readbyqxmd.com/read/29552368/primary-diffuse-large-b-cell-lymphoma-mimicking-hyperplastic-reactive-lesion-lymphoma-of-the-oral-cavity
#7
Liziane Cattelan Donaduzzi, Angélica Reinheimer, Maria Augusta Ramires da Silva, Lucia de Noronha, Aline Cristina Batista Rodrigues Johann, Ademir Franco, Soraya de Azambuja Berti Couto, Paulo Henrique Couto Souza
Objective: To report a case of a challenging oral diagnosis involving a primary diffuse large B cell lymphoma of the oral cavity mimicking a hyperplastic reactive lesion. Case Report: A 72-year-old male patient was referred to the Department of Stomatology presenting a proliferative nodular lesion in the anterior region of the mandible involving the anterior teeth. The clinical examination revealed anterior teeth affected by periodontal disease, suggesting the nodular cession hyperplastic reaction...
2018: Case Reports in Pathology
https://www.readbyqxmd.com/read/29545962/subcutaneous-granulomatous-inflammation-due-to-basidiobolomycosis-case-reports-of-3-patients-in-buruli-ulcer-endemic-areas-in-benin
#8
Luc V C Brun, Jean Jacques Roux, Ghislain E Sopoh, Julia Aguiar, Miriam Eddyani, Wayne M Meyers, Dirk Stubbe, Marie T Akele Akpo, Françoise Portaels, Bouke C de Jong
Background: Basidiobolomycosis is a rare subcutaneous mycosis, which can be mistaken for several other diseases, such as soft tissue tumors, lymphoma, or Buruli ulcer in the preulcerative stage. Microbiological confirmation by PCR for Basidiobolus ranarum and culture yield the most specific diagnosis, yet they are not widely available in endemic areas and with varying sensitivity. A combination of histopathological findings, namely, granulomatous inflammation with giant cells, septate hyphal fragments, and the Splendore-Hoeppli phenomenon, can confirm basidiobolomycosis in patients presenting with painless, hard induration of soft tissue...
2018: Case Reports in Pathology
https://www.readbyqxmd.com/read/29545961/primary-peritoneal-angiosarcoma-metastatic-to-liver-and-bone-without-history-of-radiation-therapy
#9
Way Chiang, Zofia Tynski
Angiosarcoma is a rare vascular soft tissue tumor of endothelial origin most commonly seen in the elderly as a primary cutaneous head and neck malignancy. Furthermore, a peritoneal angiosarcoma is an exceedingly rare entity. This is the second case of primary peritoneal angiosarcoma reported in literature that is not associated with prior radiotherapy. Herein, we describe a case of primary peritoneal angiosarcoma metastatic to both the liver and bone in a male patient with metachronous renal cell carcinoma and parathyroid adenoma...
2018: Case Reports in Pathology
https://www.readbyqxmd.com/read/29487755/suprasellar-ganglioglioma-expanding-the-differential-diagnosis
#10
Isabella Tondi Resta, Arminder Singh, Bruce C Gilbert, Mumtaz V Rojiani, Cargill Alleyne, Amyn M Rojiani
This case study describes a young man with symptoms suggestive of the presence of a space-occupying lesion within the cranial cavity. Imaging studies confirmed a lesion in the suprasellar region and surgical intervention to remove the tumor yielded an unexpected diagnosis. Neuroimaging characteristics and histopathology including immunohistochemistry are described. Gangliogliomas are uncommon CNS neoplasms and are most commonly found in the temporal and frontal lobes of young, male adults. They are rarely seen in the suprasellar region and only a handful of cases have been reported to date...
2018: Case Reports in Pathology
https://www.readbyqxmd.com/read/29435379/mantle-cell-lymphoma-in-the-thyroid-a-rare-presentation
#11
Uzma Mohammad Siddiqui, Sarika N Rao, Pallavi Kanwar Galera, Nahida Islam, Mira S Torres
Background: While 2% of all extranodal Non-Hodgkin Lymphomas present in the thyroid, there exists insufficient data to describe the incidence of mantle cell lymphoma in the thyroid. A case series of 1400 patients revealed that <1% of thyroid lymphomas may be MCL; hence better understanding of the disease course is essential. Patient Findings: A 65-year-old female was referred for a multinodular goiter. Multiple fine needle aspirations from the dominant right nodule were consistent with Hashimoto's thyroiditis and flow cytometry was negative...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/29379658/teratoid-cyst-of-the-postauricular-region-the-first-ever-case-report
#12
Sabin Ranabhat, Mamata Tiwari, Sushna Maharjan
Rudolf Virchow is considered to be the first scientist to have used the word sebaceous cyst. It was thought that these lesions occurred due to retention of sebaceous secretion consequent to obstruction of sebaceous ducts of sebaceous glands, although that was found not to be the case. In all these cysts, the cavity is filled with keratin. There are six types of keratin-filled cysts, namely, epidermoid, dermoid, teratoid, keratinous, trichilemmal, and teratoma cyst, which have one common name "dermoid cyst." Of the six, teratoid cyst is the least common...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/29333309/intraperitoneal-granulomas-unexpectedly-found-during-a-cesarean-delivery-a-late-complication-of-dropped-gallstones
#13
David A Suarez-Zamora, Luis E Barrera-Herrera, Ricardo Caceres-Mileo, Mauricio A Palau-Lazaro
Laparoscopic cholecystectomy is the treatment of choice for patients with symptomatic cholelithiasis. Spillage of gallstones into the abdominal cavity during laparoscopic cholecystectomy occurs in approximately one-third of cases. Although retained gallstones remain asymptomatic, few cases may develop complications. We report the case of a 29-year-old nulliparous woman presenting with several hard nodules in the omentum, raising the possibility of a metastatic disease. Histological examination demonstrated a bile-stained material and a foreign body-type granulomatous response without neoplastic tissue...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/29270326/q-fever-presented-as-a-large-retroperitoneal-pseudotumoral-mass
#14
Behdokht Nowroozizadeh, Negar Haghighi Mehmandari, Nicolas Gallegos, Mari Perez-Rosendahl, Di Lu
Background: Q fever is an infection caused by Coxiella burnetii , an intracellular organism. Acute infection is most often a benign and asymptomatic process; however, some individuals may go on to develop subacute and persistent localized symptomatic Q fever. As such, the clinical and histopathologic findings of Q fever are widely variable and may be missed if clinical suspicion is not high. Case Presentation: Herein we report the first case of C. burnetii infection presenting as an isolated retroperitoneal mass...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/29230340/primary-esophageal-melanoma-with-aberrant-cd56-expression-a-potential-diagnostic-pitfall
#15
Hani Katerji, John M Childs, Laura E Bratton, Christian G Peyre, Aaron R Huber
Primary esophageal malignant melanoma (MM) is rare and extremely aggressive. For pathologists, it can be challenging to diagnose and differentiate from other poorly differentiated malignant neoplasms in the esophagus. Complicating this fact, MM can have divergent differentiation and express nonmelanocytic immunohistochemical markers including epithelial markers (cytokeratins) and rarely neuroendocrine markers. Lack of awareness of this fact by a pathologist can lead to an erroneous diagnosis and delay treatment for an already aggressive disease...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/29230339/nodular-lymphocyte-predominant-hodgkin-lymphoma-of-the-ileum
#16
Aruna Rangan, Sarah W Grahn, Andrew L Feldman
Nodular lymphocyte predominant Hodgkin lymphoma (NLPHL) is a rare lymphoma derived from germinal center B lymphocytes that typically presents with localized lymph node involvement and can mimic a variety of both reactive and other neoplastic conditions. Extranodal involvement is uncommon in NLPHL and typically occurs in the context of previously documented or synchronous nodal disease. Involvement of the gastrointestinal tract is exceedingly rare. Here, we present the first case to our knowledge of NLPHL involving the ileum that was discovered incidentally on routine screening colonoscopy in an asymptomatic patient...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/29209546/unilateral-cervical-lymphadenopathy-due-to-cladosporium-oxysporum-a-case-report-and-review-of-the-literature
#17
R D Jayasinghe, W A M U L Abeysinghe, P I Jayasekara, Y S Mohomed, B S M S Siriwardena
Phaeohyphomycosis is a fungal infection caused by Dermatiacae group of fungi, by Cladosporium spp. The term phaeohyphomycosis was introduced by Ajello et al. in 1974 to designate infections by brown pigmented filamentous fungi. Cladosporium oxysporum is a very rare etiological agent in humans. Phaeohyphomycosis of the cervical lymph node in an immunocompetent individual is a very rare clinical entity. To the best of our knowledge we report the first case of phaeohyphomycosis caused by Cladosporium oxysporum in the absence of other systemic manifestations in a 16-year-old male...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/29204304/langerhans-cell-histiocytosis-a-diagnostic-challenge-in-the-oral-cavity
#18
Mehmet Ali Altay, Alper Sindel, Öznur Özalp, Burak Kocabalkan, İrem Hicran Özbudak, Ramazan Erdem, Ozan Salim, Dale A Baur
Background: Langerhans cell histiocytosis (LCH) is a rare disorder of the reticuloendothelial system with unknown etiology. This report aims to present a case of LCH with diffuse involvement of the oral cavity and to raise awareness of the distinguishing features of this diagnostically challenging entity. Case Report: A 26-year-old male patient presented with complaints of teeth mobility, intense pain, and difficulty in chewing. Intraoral and radiological examinations revealed generalized gingival hyperplasia and severe teeth mobility with widespread alveolar bone loss...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/29201480/cholesterol-granuloma-in-the-maxillary-sinus-are-endodontically-treated-teeth-involved-in-its-etiopathogenesis
#19
Silas Antonio Juvencio de Freitas Filho, Gilberto Gallo Esteves, Denise Tostes Oliveira
Cholesterol granuloma (CG) is a tissue reaction in response to the accumulation of cholesterol crystals rarely found in the maxillary sinus. The etiopathogenesis of maxillary sinus CG remains unclear. We reviewed the literature and added two new reports of cholesterol granuloma in maxillary sinus related to endodontically treated maxillary posterior teeth. The first report refers to a 45-year-old woman diagnosed with rhinitis, who was submitted to endodontic retreatment of maxillary molar, and subsequently showed maxillary sinus opacity with cystic appearance...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/29158936/smarca4-deficient-carcinoma-of-unknown-primary-presenting-with-fatal-paraneoplastic-hypercalcemia-in-a-heart-transplant-recipient-first-report-in-a-male-patient
#20
Abbas Agaimy, Deike Strobel, Thomas Strecker
Small cell carcinoma of the ovary, hypercalcemic type (SCCOHT), is a rare SMARCA4-driven aggressive malignancy of young age characteristically associated with paraneoplastic hypercalcemia. Comparable neoplasms/presentations have not been reported in males. A 39-year-old male heart transplant recipient (HTX 40 months previously) presented with multiple liver nodules and hypercalcemic crisis. The serum parathyroid hormone-related protein (PTHrp) was significantly elevated (241 pg/ml; reference value < 57)...
2017: Case Reports in Pathology
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