Unilateral Isolated Primary Cutaneous Amyloidosis of the External Auditory Canal.

Isolated primary cutaneous amyloidosis (PCA) of the external ear is extremely rare. We describe the case of a 65-year-old woman presenting with itching within the left external auditory canal (EAC). Otoscopy revealed a 3 mm whitish lesion involving the cartilaginous portion of the left EAC.

Cancer Diagnostic Delay in Northern and Central Italy During the 2020 Lockdown Due to the Coronavirus Disease 2019 Pandemic.

Objectives: We performed data collection concerning the coronavirus disease 2019 (COVID-19) pandemic-related delay in the diagnosis of cancers to individuate proper corrective procedures.

Methods: A comparison was made among the number of first pathologic diagnoses of malignancy made from weeks 11 to 20 of 2018, 2019, and 2020 at seven anatomic pathology units serving secondary care hospitals in northern-central Italy.

Results: Cancer diagnoses fell in 2020 by 44.

Sebaceous Carcinoma of the Breast: Fact or Fiction? A Case Report and a Review of the Literature.

Previously considered an exceedingly rare entity, sebaceous carcinoma of the breast is now regarded in the World Health Organization 2019 classification as a "special histopathological pattern" of invasive breast carcinoma of no special type. . In this article, we report the case of a fine needle aspiration cytology and the histopathological features of a breast carcinoma with clear-cut morphological features suggesting sebaceous differentiation, but showing no positive staining with the anti-adipophilin antibody.

Cancer diagnostic rates during the 2020 'lockdown', due to COVID-19 pandemic, compared with the 2018-2019: an audit study from cellular pathology.

Aims: We performed an audit to evaluate the impact of the COVID-19 pandemic-related delay in the diagnosis of major cancers at a Pathology Unit of a Secondary Care Hospital Network in Italy.

Methods: A comparison was made among the number of first cellular pathological diagnoses of malignancy made from the 11th to the 20th week of the years 2018-2020.

Results: Cancer diagnoses fell in 2020 by 39% compared with the average number recorded in 2018 and 2019.

A case of acanthosis nigricans in a HIV-infected patient.

Background: To date, very little information is available concerning the relationship between acanthosis nigricans (AN) and infection with human immunodeficiency virus type 1 (HIV-1).

Case Presentation: Herein, we report the case of a middle-aged man admitted for fever and progressively worsening dyspnea in the context of an opportunistic pneumonia and firstly diagnosed with acquired immunodeficiency syndrome (AIDS). At the time of diagnosis, physical examination revealed the presence of a palpable, hyperpigmented skin lesion on the left areola with surface desquamation and velvety texture consistent with AN.

PIK3CA somatic mutation in sinonasal teratocarcinosarcoma.

Sinonasal Teratocarcinosarcoma (SNTCS) is a rare and histologically heterogeneous tumor of uncertain origin and unknown molecular pathogenesis. Its location and aggressiveness, with frequent recurrences, high rate for metastasis and short mean survival, make SNTCS a tumor highly difficult to treat. Thus, the identification of underlying genetic changes could potentially provide successful adjuvant or alternative precision medicine treatment options for patients with this tumor.

Eosinophilic folliculitis of the scalp associated with PD-1/PDL1 inhibitors.

Background: Immune checkpoint inhibitors are monoclonal antibodies which target immune "checkpoints" enhancing T cell-mediated cytotoxic and antitumor responses. Together to the amazing results, these drugs are associated with some peculiar adverse events called immune-related adverse events. Alopecia is one of these.

Isoradiotopic response of discoid lupus after radiotherapy: A case report and review of the literature.

Radiotherapy is frequently associated with a great number of collateral effects, which can affect the skin and its appendages. In addition to more common side effects, like radiodermatitis, other cutaneous conditions are less known and often they are underdiagnosed. Among these, isoradiotopic response is one of the rare radiotherapy-associated phenomena.

A rare case of spinal epidural sarcoidosis: case report and review of the literature.

Sarcoidosis is a rare systemic disease characterized by growth and organization of inflammatory cells in a granuloma. Granulomas can localize in any parts of the human body. The main localization is represented by lungs, lymph nodes, eyes and skin.

Breast cancer subtypes affect the nodal response after neoadjuvant chemotherapy in locally advanced breast cancer: Are we ready to endorse axillary conservation?

We evaluated the impact of breast cancer subtypes on pathologic complete response (pCR) in 181 patients with positive nodes undergoing neoadjuvant chemotherapy (NAC). After NAC, patients underwent surgery, with sentinel lymph node biopsy (SLNB) or axillary dissection (ALND). In 28.

Infundibuloneurohypophysitis associated with autoimmune thrombocytopenia and chiasmal syndrome: a case report.

Lymphocytic hypophysitis is an uncommon autoimmune disease. It may involve the adenohypophysis, neurohypophysis and pituitary stalk. It is most often encountered in pregnant women.

A Subset of Men With Age-Related Decline in Testosterone Have Gonadotroph Autoantibodies.

Context: Age-related decline in serum testosterone (T) is being increasingly diagnosed. In most men, it associates with low or inappropriately normal gonadotropin levels, which suggests a hypothalamic-pituitary etiology. Autoantibodies against adenohypophyseal cells have been associated with pituitary dysfunction; however, the prevalence of pituitary autoimmunity in this age-related T decline has not been assessed.

Detection of pituitary antibodies by immunofluorescence: approach and results in patients with pituitary diseases.

Context: Pituitary antibodies have been measured mainly to identify patients whose disease is caused or sustained by pituitary-specific autoimmunity. Although reported in over 100 publications, they have yielded variable results and are thus considered of limited clinical utility.

Objectives: Our objectives were to analyze all publications reporting pituitary antibodies by immunofluorescence for detecting the major sources of variability, to experimentally test these sources and devise an optimized immunofluorescence protocol, and to assess prevalence and significance of pituitary antibodies in patients with pituitary diseases.