Scrotal calcinosis is a benign condition where multiple calcified nodules are found within the dermis of the scrotal skin. It is a rare condition which is usually asymptomatic and has no clear aetiology although several theories have been proposed in the aetiopathogenesis. We report a 55-year-old man with extensive scrotal calcinosis. Surgical excision of the affected scrotal skin was curative.

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Background. Renal cell carcinoma is a heterogeneous group of malignant tumors originating from the kidney. We report a case of a renal cell carcinoma with two very rare associates, i.e., a large intratumoral aneurysm and a synchronous extrarenal cystic tumor outside the main tumor. Case Presentation. A 31-year-old woman, who presented with painless hematuria and loin pain, was diagnosed to have a large renal mass measuring 15 × 9 × 8.5  cm with an intralesional arterial aneurysm measuring 4.5 × 3.5  cm on radiological examination. During surgery, a separate cystic tumor measuring 5 × 4.5 × 4  cm with distinct vascular supply was noted anteromedial to the kidney, in addition to the renal mass. The histology of the main tumor was compatible with t(6:11) type microphthalmia-associated transcription factor (MiT) family translocation RCC. The aneurysm was of venous origin histologically, and a radiologically demonstrable arteriovenous fistula was recognized retrospectively. The extrarenal cyst has also showed similar histology to that of main tumor and had no evidence of a degenerated lymph node. Discussion. Although few cases were reported with various vascular anomalies associated with a renal tumor, this is the first ever case to find an arteriovenous fistula with a secondary venous aneurysm located inside a malignant renal mass. Similarly, no solid RCC is reported to present with an extrarenal malignant cystic nodule. The prognostic and oncological significance of the extrarenal malignant cyst is unclear. Both of these extraordinary features of this case were not properly identified on preoperative imaging. Reviewing the preoperative imaging when pathology reports are available helps to overcome difficulties in making the final diagnosis of complex cases. Conclusion. RCCs can house vascular anomalies like arteriovenous fistula and venous aneurysms and can exist with concomitant extrarenal malignant cystic nodules.

Objective: Xanthogranulomatous prostatitis (XGP) is a rare entity that has different clinical presentations. This report of three cases illustrates the diversity of clinical features of XGP, together with a comprehensive literature review. Methods: Three elderly male Sri Lankan patients underwent transurethral resection of the prostate for severe lower urinary tract symptoms. Carcinoma of the prostate was suspected in two patients, and one of them had a very high prostate-specific antigen level (324 ng/mL), suggestive of metastatic prostate carcinoma. The third patient had a clinically benign prostate gland. The histology of all three resected prostate chippings revealed XGP. Results: This case series encompasses two cases of XGP that mimicked carcinoma of the prostate clinically and another case that had benign clinical features. Patients with XGP can have clinical, radiological and serological evidence of advanced prostate carcinoma. Other rare modes of presentation of XGP include prostate abscess and haematospermia. Many concerns of XGP such as aetiology, epidemiology, natural history, risk of malignant transformation and possible treatment options remain unclear due to the paucity of the literature. Conclusions: XGP presents with a variety of benign and malignant clinical features. The possibility of encountering XGP in patients with clinically malignant prostates should not be overlooked.

C3 glomerulopathy (C3GP) is a group of diseases caused by a deregulated complement system, which encompasses both dense deposit disease and C3 glomerulonephritis. Renal manifestations of C3GP are primarily of proliferative glomerulonephritis, and only a few case reports of crescentic glomerulonephritis (CGN) in association with C3GP are available. Here is a case of an adult South-Asian female, who was diagnosed as seropositive acute Mycoplasma pneumoniae infection, with associated systemic manifestations, including immune-type extravascular haemolysis and nephrotic range proteinuria. Subsequent renal biopsy revealed CGN with disrupted Bowman’s capsules and necrotizing lesions. Immunofluorescence showed coarse granular mesangial C3 deposits with negative IgM, IgG, IgA, and C1q. The immunomorphological phenotype raised two possibilities including C3GP and infection-related glomerulonephritis (IRGN). Persistent proteinuria with no evidence of resolution even after 6 months of follow-up favoured C3GP over IRGN. The patient proceeded to end-stage renal failure requiring renal replacement despite aggressive immunosuppression. This case illustrates the rare association of CGN with C3GP induced by Mycoplasma pneumoniae infection, highlighting the importance of correct diagnosis as well as timely identification of triggering factors in CGN on patient outcome.