2020-27 / July 6
2020-26 / June 29
A 30 year-old male presented with long history of back pain and pain with ejaculation, which led to imaging studies that revealed left renal (3.5cm) and large retroperitoneal mass (6.5cm). He has a history of left undescended testicle as a child. Grossly, the kidney tumor exhibits solid and cystic cut surface on partial nephrectomy. Immunohistochemical stains show positive PAX8, GATA3 and AMACR expression in tumor cells, and negative immunoreactivity for CK7.
2020-25 / June 22
2020-24 / June 15
A 60-year old patient underwent a transurethral resection of the prostate due to clinical diagnosis of nodular hyperplasia.
2020-23 / June 8
2020-22 / June 1
A woman in her 60s with a well circumscribed mass in the renal cortex.
2020-21 / May 25
A male in his 40s presented with left testicular swelling and pain. On ultrasound, a solid mass was identified in the left testis. Pre-operative AFP and HCG serum levels were not elevated. Serum LDH was mildly elevated preoperatively. The patient underwent a left radical orchiectomy for a presumed testicular tumor.
Grossly, no discrete mass was noted in the specimen, but the cut surface of the testis was remarkable for hemorrhage. Given the discrepancy between the clinical impression and gross findings, the orchiectomy specimen was extensively sampled for microscopic examination and the main findings are shown in the accompanying photomicrographs.
2020-20 / May 18
2020-19 / May 11
A 53 year old male with pT3b prostate cancer developed gross hematuria 20 months after receiving external beam radiation. A cystoscopy showed friable mucosa, which was thought to be suspicious for bladder cancer.
2020-18 / May 4
The patient in his 40s presented with a complaint of a right testicular mass. Ultrasound revealed a 2.0 cm cystic mass. Serum tumor markers (HCG, AFP, LDH) were all normal. Positive immunohistochemical stains are shown. Additional stains performed (all negative) included CK5/6, calretinin, and OCT4.
2020-17 / April 27
A 55-year-old man presented with paratesticular pain and swelling. A hydrocelectomy was performed.
2020-16 / April 20
An man in his 80s with a history of painless hematuria has a small polypoid lesion within the proximal prostatic urethra.
2020-15/ April 13
A 65 year old male was found to have a 2.6 cm partially renal mass. A robotic partial nephrectomy was performed. Special stains for microorganisms were negative.
2020-14 / April 6
A middle-aged man with no prior medical history presents with hematuria. A TURBT was performed.
2020-13 / March 30
A 29-year-old man presented with symptoms of lithiasis and was found to have a heavily calcified 1.9 cm renal mass, interpreted radiographically as a benign process. IHC was performed for CK7 (diffuse positive), and CA-IX (diffuse positive, picture shown) and CD10 (negative).
2020-12 / March 23
55 year old male with a 0.5 cm bladder polypoid lesion.
2020-11 / March 16
71 y/o male with an incidental 4.8 cm renal tumor treated with partial nephrectomy. The tumour is positive for PAX8, CK7 and KSP-Cadherin. CK20, Vimentin, CD10, AMACR and CA IX are negative. SDHB and Fumarate Hydratase are retained. The Ki-67/MIB1 index is low (≤5%).
2020-10 / March 9
52 year old male presented with chronic left epididymal pain and discomfort. On physical examination, the posterior portion of left epididymis felt “nodular”. The patient had a vasectomy more than 20 years ago. Images are from the epididymectomy specimen.
2020-9 / March 2
36 year old male with hematuria was found to have a renal mass, enlarged regional lymph nodes and metastatic lesions in the liver. A biopsy of the renal mass was performed.
2020-8 / February 24
43 year old female with a 1.7cm renal cortical mass found incidentally on imaging.
2020-7 / February 17
A 72-year old patient underwent a transurethral resection of the prostate due to clinical diagnosis of nodular hyperplasia. He had a previous transurethral resection of the prostate 18 months earlier. Micrographs show one or two areas of interest in the specimen, the largest area measuring 2.5 mm. The lesion was positive for PAX8 (photo), negative for PSA and Ki67 stained less than 5% of the cells.
2020-6 / February 10
A 58 year old man presented with a cystic 8.0 cm. mass
in the testis.
2020-5 / February 3
80 y/o male with hematuria and a bladder tumor. NKX3.1 and prostein immunostains are shown. Otherwise the tumor is positive for AR, PSMA and PSAP and is negative for GATA3, UroplakinII, CKHMW, p63, CK5/6.
2020-4 / January 27
17-year-old patient with a paratesticular mass.
2020-3 / January 20
A 39-year old male presented with a painful slowly enlarging left testicle with mass. A left radical orchiectomy was performed.
2020-2 / January 13
A 31 year-old male was treated with chemotherapy for clinical retroperitoneal metastases a malignant germ cell tumor composed of 90% embryonal carcinoma, 9% yolk sac tumor (YST), and 1% teratoma. Post chemotherapy there was residual retroperitoneal tumor. A retroperitoneal lymph node dissection was performed.
2020-1 / January 6
A 56 yo man presented with a complaint of hoarseness. Imaging studies revealed multiple nodules in his right lung and an 11 cm mass in his left kidney. Clinically, he was thought to have a kidney cancer with lung metastases. He underwent a radical nephrectomy. PAX8 (image 4) and TTF1 (image 5) immunostains are shown.
2019-45 / December 30
A 46 y/o male with a testicular mass undergoes orchiectomy. On gross examination a well demarcated 1,5 cm tumor with spongy appearance confined to testis is seen.
2019-44 / December 24
76 y/o M, presents with hematuria. On cystoscopy, bladder lesion found and biopsied.
2019-43 / December 16
A 55 year old male had neurogenic bladder secondary to
spinal cord injury and paraplegia. The patient performs self-catheterization
for urination. He had history of repeated urinary tract infections with
cultures showing Klebsiella and E. coli infections. He complained of bleeding
during catheterization two months prior to the presentation. A cystoscopy showed
diffuse erythema in the dome of the bladder and a nodule in the anterior wall
of the bladder. A biopsy of the nodule was performed.
2019-42 / December 9
2019-41 / December 2
A 36 year-old male underwent an orchiectomy for a 1.1 cm. testicular mass.
2019-40 / November 25
10-year-old girl with 15 cm renal mass and multiple pulmonary metastases. She received neoadjuvant chemotherapy according to the SIOP Umbrella Protocol followed by radical nephrectomy. The immunophenotype was as follows: diffusely positive for vimentin, INI1, CD99, focally positive for cyclin D1, PAX2, S100, and negative for EMA, WT1, AE1/AE3, TLE1, ERG, FLI1, CD56, BCL2, PAX8, desmin. FISH analysis was carried out using EWSR1/FLI1 TriCheck Probe, which identified an EWSR1 rearrangement, but the FLI1 was intact.
2019-39 / November 17
24-year-old male with congenital adrenal hyperplasia and bilateral testicular masses.
2019-38 / November 10
A 45 year old female presented with abdominal pain during her menstrual cycle. Abdominal imaging showed a right ureteral mass and obstruction. The patient underwent right segmental ureterectomy.
2019-37 / November 3
70 year old male with
a bladder mass. CT with contrast showed a 2 cm left sided well-circumscribed
bladder mass in the wall. Robotic partial cystectomy was performed. Pictures: 1-3
H&E’s, 4- CD34, 5- STAT6
2019-36 / October 28
A 74 year-old female presented with a bladder mass
obstructing the left ureteral orifice.
2019-35 / October 21
2019-34 / October 14
2019-33 / September 30
2019-32 / September 23
69-year-old male with an elevated PSA and a cluster of somewhat dilated glands on prostate needle biopsy (images 1-3: low and high magnification images & PIN-4 IHC triple stain); images 4-5 depict a similar cluster in a prostatectomy specimen from a different patient.
2019-31 / September 16
A 53-year-old woman presented with right
upper quadrant fullness, increasing abdominal discomfort and a dull ache on her
right flank over three months. Subsequently, she underwent excision of a large retroperitoneal
peri-pancreatic solid and cystic mass, measuring 17cm in greatest linear
dimension. This neoplasm did not appear to involve the adrenal gland. Histopathologic
examination revealed a paraganglioma.
2019-30 / September 9
A 78-year-old male underwent a transurethral resection of the prostate and representative images are shown.
The immunophenotype is as follows:
Positive: CK7 & focal, patchy expression of CK20, CKAE1/3 and CK-HMW
Negative: NKX3.1, PSA, PSAP, P40, GATA3, synaptophysin and chromogranin
2019-29 / September 2
A 4 year old boy presented with gross hematuria and a solitary bladder mass was identified on a renal/bladder ultrasound. Cystoscopic biopsy confirmed malignancy, and a partial cystectomy was performed. Representative H&E images and an immunostain for INI1 are shown. The tumor was also negative for pan-cytokeratin, EMA, S100, desmin, myogenin, myoD1, and CD34.
2019-28 / August 26
images of transurethral resections of bladder tumors taken from a 33-year-old
male have been depicted.
2019-27 / August 19
2019-26 / August 12
A 30 year old male who immigrated from Africa presents with gross hematuria. Cystoscopy and biopsy are performed.
2019-25 / August 5
A 55-year-old female was found to have a 5.9 cm solid-cystic renal mass. Representative H&E images and an immunostain for Cathepsin K are shown.
2019-24 / July 29
26-year-old male presents with a “fibrous
plaque” of the penis associated with curvature.
The patient undergoes surgery for presumed Peyronie’s disease at which
time the surgeon excises the plaque material. The tumor is Keratin-positive. The immunostain shown is INI-1.
2019-23 / July 22
A 33-year old male with a prior history of a desmoplastic medulloblastoma was found to have a 1 cm left testicular mass on follow up. Representative images of this lesion are shown. The immunophenotype is as follows:
Positive: SF1, S100, CD68 and vimentin
Negative: calretinin, inhibin, CK AE1/3, CD31, CD34, SMA, melan A, HMB45, CD163
2019-22 / July 15
65-year-old gentleman presents with elevated PSA. Transrectal biopsies performed.
2019-21 / July 8
25-year-old white male presents with large renal mass with
pulmonary metastases. A nephrectomy was
performed. SDH B immunostain is shown.
2019-20 / July 1
35-year-old female presents with hematuria. She has a history of hypertension. Cystoscopy revealed a 3 cm bladder mass and transurethral resection was performed. The tumor is positive for GATA3 and synaptophysin.
2019-19 / June 24
A 69 year old male presented with a 9.2 cm well circumscribed renal mass.
2019-18 / June 17
A 58-year-old male presented with urinary
obstruction and elevated PSA of 12 ng/ml. He underwent transurethral resection
of the prostate (TURP).
2019-17 / June 10
A 78 year old man presented with a mass in the left seminal vesicle. A cystoprostatectomy was performed.
2019-16 / June 3
40 year old male with a 9.5 cm cystic and solid renal mass. All images are from the radical nephrectomy specimen.
2019-15 / May 27
2019-14 / May 20
male with a history of follicular lymphoma, melanoma, and a 3.6 cm kidney mass,
present with inguinal lymphadenopathy. Images are from biopsy of left inguinal
2019-13 / May 13
54 yo male with a testicular mass. By immunohistochemistry, tumor cells are positive for cytokeratin AE1/AE3, desmin (perinuclear dot pattern) and WT1.
2019-12 / May 6
2019-11 / April 29
A 57 year-old male underwent radical prostatectomy for Grade group 2 prostatic adenocarcinoma diagnosed on biopsy. Upon microscopic examination, a glandular lesion was identified in the left anterior prostate, in addition to a large tumor nodule of Grade group 2 cancer in the right posterior. The following images are representative of the left anterior lesion which showed strong and diffuse staining with PAX2 (shown) and racemase, and negativity for PSA and WT-1.
2019-10 / April 22
A 67-year-old male with a 2.9 cm organ-confined renal mass.
2019-9 / April 15
65 year old man presented with a 3 mm nodule in the bladder.
2019-8 / April 8
A 35-year-old male presented with a 2-week history of discomfort and enlargement of the right testis. He was eventually treated with a right orchiectomy which revealed involvement by seminoma. Subsequently, he presented with early retroperitoneal relapse while on surveillance.
2019-7 / April 1
40-year-old female with a 4.5 cm solid and
cystic renal mass. Images are from the radical nephrectomy specimen.
2019-6 / March 25
A 54 year old man presented with multiple bone metastases and a mass involving the bladder neck. A TUR of the bladder was performed. On outside stains, the tumor was negative for CD138, kappa and lambda light chains, CD56, CD45, CK7, HMWCK, AE1/3, desmin, and GATA3. Stains performed at our institution were positive for NKX3.1, P501S, PSA and negative for GATA3 and Uroplakin II. E-cadherin was lost in the tumor.
2019-5 / March 18
The cut surface of the kidney reveals a diffusely cystic appearance in
an adult (Case 1) and in a separate pediatric patient (Case 2), respectively.
2019-4 / March 11
A 43-year-old male presented with a painless testicular mass. Representative histopathologic images and results of molecular testing are shown.
2019-3 / March 4
A 25 year old man was found to have a 5.0 cm. paratesticular mass.
2019-2 / February 25
A 79 year old male underwent a TURP due to obstruction. The tumor was stained at the outside institution and was diffusely positive for high molecular weight cytokeratin and negative for PSA, PSAP, GATA3, synaptophysin, with a ki67 of 90%.
2019-1 / February 18
68 year old male with large bladder mass. Transurethral resection is performed.